diff --git a/config/config.exs b/config/config.exs
index 44d0666c2..f15398df7 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -212,7 +212,8 @@ config :mobilizon, :activitypub,
   # One day
   actor_stale_period: 3_600 * 48,
   actor_key_rotation_delay: 3_600 * 48,
-  sign_object_fetches: true
+  sign_object_fetches: true,
+  stale_actor_search_exclusion_after: 3_600 * 24 * 7
 
 config :mobilizon, Mobilizon.Service.Geospatial, service: Mobilizon.Service.Geospatial.Nominatim
 
diff --git a/js/src/components/Event/OrganizerPicker.vue b/js/src/components/Event/OrganizerPicker.vue
index d9c2b1d13..2aba5a8ec 100644
--- a/js/src/components/Event/OrganizerPicker.vue
+++ b/js/src/components/Event/OrganizerPicker.vue
@@ -5,33 +5,48 @@
       :placeholder="$t('Filter by profile or group name')"
       v-model="actorFilter"
     />
-    <b-radio-button
-      v-model="selectedActor"
-      :native-value="availableActor"
-      class="list-item"
-      v-for="availableActor in actualFilteredAvailableActors"
-      :key="availableActor.id"
+    <transition-group
+      tag="ul"
+      class="grid grid-cols-1 gap-y-3 m-5 max-w-md mx-auto"
+      enter-active-class="duration-300 ease-out"
+      enter-from-class="transform opacity-0"
+      enter-to-class="opacity-100"
+      leave-active-class="duration-200 ease-in"
+      leave-from-class="opacity-100"
+      leave-to-class="transform opacity-0"
     >
-      <div class="media" dir="auto">
-        <figure class="image is-48x48" v-if="availableActor.avatar">
-          <img
-            class="image is-rounded"
-            :src="availableActor.avatar.url"
-            alt=""
-          />
-        </figure>
-        <b-icon
-          class="media-left"
-          v-else
-          size="is-large"
-          icon="account-circle"
+      <li
+        class="relative focus-within:shadow-lg"
+        v-for="availableActor in actualFilteredAvailableActors"
+        :key="availableActor.id"
+      >
+        <input
+          class="sr-only peer"
+          type="radio"
+          :value="availableActor"
+          name="availableActors"
+          v-model="selectedActor"
+          :id="`availableActor-${availableActor.id}`"
         />
-        <div class="media-content">
-          <h3>{{ availableActor.name }}</h3>
-          <small>{{ `@${availableActor.preferredUsername}` }}</small>
-        </div>
-      </div>
-    </b-radio-button>
+        <label
+          class="flex flex-wrap p-3 bg-white border border-gray-300 rounded-lg cursor-pointer hover:bg-gray-50 peer-checked:ring-primary peer-checked:ring-2 peer-checked:border-transparent"
+          :for="`availableActor-${availableActor.id}`"
+        >
+          <figure class="image is-48x48" v-if="availableActor.avatar">
+            <img
+              class="image is-rounded"
+              :src="availableActor.avatar.url"
+              alt=""
+            />
+          </figure>
+          <b-icon v-else size="is-large" icon="account-circle" />
+          <div>
+            <h3>{{ availableActor.name }}</h3>
+            <small>{{ `@${availableActor.preferredUsername}` }}</small>
+          </div>
+        </label>
+      </li>
+    </transition-group>
   </div>
 </template>
 <script lang="ts">
diff --git a/js/src/components/Event/OrganizerPickerWrapper.vue b/js/src/components/Event/OrganizerPickerWrapper.vue
index 8a07705a6..20f59c7ff 100644
--- a/js/src/components/Event/OrganizerPickerWrapper.vue
+++ b/js/src/components/Event/OrganizerPickerWrapper.vue
@@ -1,5 +1,8 @@
 <template>
-  <div class="organizer-picker" v-if="selectedActor">
+  <div
+    class="bg-white border border-gray-300 rounded-lg cursor-pointer"
+    v-if="selectedActor"
+  >
     <!-- If we have a current actor (inline) -->
     <div
       v-if="inline && selectedActor.id"
@@ -69,7 +72,8 @@
                 <p>{{ $t("Add a contact") }}</p>
                 <b-input
                   :placeholder="$t('Filter by name')"
-                  v-model="contactFilter"
+                  :value="contactFilter"
+                  @input="debounceSetFilterByName"
                   dir="auto"
                 />
                 <div v-if="actorMembers.length > 0">
@@ -144,11 +148,12 @@ import EmptyContent from "../Utils/EmptyContent.vue";
 import {
   CURRENT_ACTOR_CLIENT,
   IDENTITIES,
-  LOGGED_USER_MEMBERSHIPS,
+  PERSON_GROUP_MEMBERSHIPS,
 } from "../../graphql/actor";
 import { Paginate } from "../../types/paginate";
 import { GROUP_MEMBERS } from "@/graphql/member";
 import { ActorType, MemberRole } from "@/types/enums";
+import debounce from "lodash/debounce";
 
 const MEMBER_ROLES = [
   MemberRole.CREATOR,
@@ -179,15 +184,17 @@ const MEMBER_ROLES = [
       },
     },
     currentActor: CURRENT_ACTOR_CLIENT,
-    userMemberships: {
-      query: LOGGED_USER_MEMBERSHIPS,
+    personMemberships: {
+      query: PERSON_GROUP_MEMBERSHIPS,
       variables() {
         return {
+          id: this.currentActor?.id,
           page: 1,
           limit: 10,
+          groupId: this.$route.query?.actorId,
         };
       },
-      update: (data) => data.loggedUser.memberships,
+      update: (data) => data.person.memberships,
     },
     identities: IDENTITIES,
   },
@@ -197,6 +204,9 @@ export default class OrganizerPickerWrapper extends Vue {
 
   @Prop({ default: true, type: Boolean }) inline!: boolean;
 
+  @Prop({ type: Array, required: false, default: () => [] })
+  contacts!: IActor[];
+
   currentActor!: IPerson;
 
   identities!: IPerson[];
@@ -207,13 +217,17 @@ export default class OrganizerPickerWrapper extends Vue {
 
   usernameWithDomain = usernameWithDomain;
 
-  @Prop({ type: Array, required: false, default: () => [] })
-  contacts!: IActor[];
   members: Paginate<IMember> = { elements: [], total: 0 };
 
   membersPage = 1;
 
-  userMemberships: Paginate<IMember> = { elements: [], total: 0 };
+  personMemberships: Paginate<IMember> = { elements: [], total: 0 };
+
+  data(): Record<string, unknown> {
+    return {
+      debounceSetFilterByName: debounce(this.setContactFilter, 1000),
+    };
+  }
 
   get actualContacts(): (string | undefined)[] {
     return this.contacts.map(({ id }) => id);
@@ -226,15 +240,17 @@ export default class OrganizerPickerWrapper extends Vue {
     );
   }
 
-  @Watch("userMemberships")
+  setContactFilter(contactFilter: string) {
+    this.contactFilter = contactFilter;
+  }
+
+  @Watch("personMemberships")
   setInitialActor(): void {
-    if (this.$route.query?.actorId) {
-      const actorId = this.$route.query?.actorId as string;
-      const actor = this.userMemberships.elements.find(
-        ({ parent: { id }, role }) =>
-          actorId === id && MEMBER_ROLES.includes(role)
-      )?.parent as IActor;
-      this.selectedActor = actor;
+    if (
+      this.personMemberships?.elements[0]?.parent?.id ===
+      this.$route.query?.actorId
+    ) {
+      this.selectedActor = this.personMemberships?.elements[0]?.parent;
     }
   }
 
@@ -276,7 +292,7 @@ export default class OrganizerPickerWrapper extends Vue {
         actor.preferredUsername.toLowerCase(),
         actor.name?.toLowerCase(),
         actor.domain?.toLowerCase(),
-      ].some((match) => match?.includes(this.contactFilter.toLowerCase()));
+      ];
     });
   }
 
diff --git a/js/src/graphql/actor.ts b/js/src/graphql/actor.ts
index 962611c14..004da0813 100644
--- a/js/src/graphql/actor.ts
+++ b/js/src/graphql/actor.ts
@@ -351,6 +351,30 @@ export const PERSON_STATUS_GROUP = gql`
   ${ACTOR_FRAGMENT}
 `;
 
+export const PERSON_GROUP_MEMBERSHIPS = gql`
+  query PersonGroupMemberships($id: ID!, $groupId: ID!) {
+    person(id: $id) {
+      id
+      memberships(groupId: $groupId) {
+        total
+        elements {
+          id
+          role
+          parent {
+            ...ActorFragment
+          }
+          invitedBy {
+            ...ActorFragment
+          }
+          insertedAt
+          updatedAt
+        }
+      }
+    }
+  }
+  ${ACTOR_FRAGMENT}
+`;
+
 export const GROUP_MEMBERSHIP_SUBSCRIPTION_CHANGED = gql`
   subscription GroupMembershipSubscriptionChanged(
     $actorId: ID!
diff --git a/js/src/graphql/group.ts b/js/src/graphql/group.ts
index fdc4dac9b..52ca14960 100644
--- a/js/src/graphql/group.ts
+++ b/js/src/graphql/group.ts
@@ -226,6 +226,15 @@ export const FETCH_GROUP = gql`
   ${RESOURCE_METADATA_BASIC_FIELDS_FRAGMENT}
 `;
 
+export const FETCH_GROUP_BY_ID = gql`
+  query FetchGroupById($id: ID!) {
+    groupById(id: $name) {
+      ...GroupFullFields
+    }
+  }
+  ${GROUP_FIELDS_FRAGMENTS}
+`;
+
 export const GET_GROUP = gql`
   query GetGroup(
     $id: ID!
diff --git a/js/src/views/Admin/AdminUserProfile.vue b/js/src/views/Admin/AdminUserProfile.vue
index a2bd191ef..d6a6da772 100644
--- a/js/src/views/Admin/AdminUserProfile.vue
+++ b/js/src/views/Admin/AdminUserProfile.vue
@@ -95,7 +95,7 @@
                     >
                       <b-button
                         size="is-small"
-                        v-if="!user.confirmedAt || !user.disabled"
+                        v-if="!user.confirmedAt || user.disabled"
                         @click="isConfirmationModalActive = true"
                         type="is-text"
                         icon-left="check"
diff --git a/lib/graphql/api/search.ex b/lib/graphql/api/search.ex
index 799f1234d..3b002b6f6 100644
--- a/lib/graphql/api/search.ex
+++ b/lib/graphql/api/search.ex
@@ -49,7 +49,8 @@ defmodule Mobilizon.GraphQL.API.Search do
               location: Map.get(args, :location),
               minimum_visibility: Map.get(args, :minimum_visibility, :public),
               current_actor_id: Map.get(args, :current_actor_id),
-              exclude_my_groups: Map.get(args, :exclude_my_groups, false)
+              exclude_my_groups: Map.get(args, :exclude_my_groups, false),
+              exclude_stale_actors: true
             ],
             page,
             limit
diff --git a/lib/graphql/resolvers/group.ex b/lib/graphql/resolvers/group.ex
index 65741f7a9..b40955a61 100644
--- a/lib/graphql/resolvers/group.ex
+++ b/lib/graphql/resolvers/group.ex
@@ -16,15 +16,15 @@ defmodule Mobilizon.GraphQL.Resolvers.Group do
 
   require Logger
 
+  @doc """
+  Find a group
+  """
   @spec find_group(
           any,
           %{:preferred_username => binary, optional(any) => any},
           Absinthe.Resolution.t()
         ) ::
           {:error, :group_not_found} | {:ok, Actor.t()}
-  @doc """
-  Find a group
-  """
   def find_group(
         parent,
         %{preferred_username: name} = args,
@@ -45,7 +45,8 @@ defmodule Mobilizon.GraphQL.Resolvers.Group do
       {:ok, %Actor{}} ->
         {:error, :group_not_found}
 
-      {:error, _err} ->
+      {:error, err} ->
+        Logger.debug("Unable to find group, #{inspect(err)}")
         {:error, :group_not_found}
     end
   end
@@ -59,11 +60,30 @@ defmodule Mobilizon.GraphQL.Resolvers.Group do
       {:ok, %Actor{}} ->
         {:error, :group_not_found}
 
-      {:error, _err} ->
+      {:error, err} ->
+        Logger.debug("Unable to find group, #{inspect(err)}")
         {:error, :group_not_found}
     end
   end
 
+  def find_group_by_id(_parent, %{id: id} = args, %{
+        context: %{
+          current_actor: %Actor{id: actor_id}
+        }
+      }) do
+    with %Actor{suspended: false, id: group_id} = group <- Actors.get_actor_with_preload(id),
+         true <- Actors.is_member?(actor_id, group_id) do
+      {:ok, group}
+    else
+      _ ->
+        {:error, :group_not_found}
+    end
+  end
+
+  def find_group_by_id(_parent, _args, _resolution) do
+    {:error, :group_not_found}
+  end
+
   @doc """
   Get a group
   """
diff --git a/lib/graphql/resolvers/person.ex b/lib/graphql/resolvers/person.ex
index 31a296d61..060ae2d42 100644
--- a/lib/graphql/resolvers/person.ex
+++ b/lib/graphql/resolvers/person.ex
@@ -358,11 +358,11 @@ defmodule Mobilizon.GraphQL.Resolvers.Person do
   Returns this person's group memberships
   """
   @spec person_memberships(Actor.t(), map(), map()) :: {:ok, Page.t()} | {:error, String.t()}
-  def person_memberships(%Actor{id: actor_id} = person, %{group: group}, %{
+  def person_memberships(%Actor{id: actor_id} = person, args, %{
         context: %{current_user: %User{} = user}
       }) do
     if user_can_access_person_details?(person, user) do
-      with {:group, %Actor{id: group_id}} <- {:group, Actors.get_actor_by_name(group, :Group)},
+      with {:group, %Actor{id: group_id}} <- {:group, group_from_args(args)},
            {:ok, %Member{} = membership} <- Actors.get_member(actor_id, group_id) do
         {:ok,
          %Page{
@@ -373,6 +373,21 @@ defmodule Mobilizon.GraphQL.Resolvers.Person do
         {:error, :member_not_found} ->
           {:ok, %Page{total: 0, elements: []}}
 
+        {:group, :none} ->
+          with {:can_get_memberships, true} <-
+                 {:can_get_memberships, user_can_access_person_details?(person, user)},
+               memberships <-
+                 Actors.list_members_for_actor(
+                   person,
+                   Map.get(args, :page, 1),
+                   Map.get(args, :limit, 10)
+                 ) do
+            {:ok, memberships}
+          else
+            {:can_get_memberships, _} ->
+              {:error, dgettext("errors", "Profile is not owned by authenticated user")}
+          end
+
         {:group, nil} ->
           {:error, :group_not_found}
       end
@@ -381,23 +396,6 @@ defmodule Mobilizon.GraphQL.Resolvers.Person do
     end
   end
 
-  def person_memberships(
-        %Actor{} = person,
-        %{page: page, limit: limit},
-        %{
-          context: %{current_user: %User{} = user}
-        }
-      ) do
-    with {:can_get_memberships, true} <-
-           {:can_get_memberships, user_can_access_person_details?(person, user)},
-         memberships <- Actors.list_members_for_actor(person, page, limit) do
-      {:ok, memberships}
-    else
-      {:can_get_memberships, _} ->
-        {:error, dgettext("errors", "Profile is not owned by authenticated user")}
-    end
-  end
-
   @doc """
   Returns this person's group follows
   """
@@ -498,4 +496,17 @@ defmodule Mobilizon.GraphQL.Resolvers.Person do
        do: actor_user_id == user_id
 
   defp user_can_access_person_details?(_, _), do: false
+
+  @spec group_from_args(map()) :: Actor.t() | nil
+  defp group_from_args(%{group: group}) do
+    Actors.get_actor_by_name(group, :Group)
+  end
+
+  defp group_from_args(%{group_id: group_id}) do
+    Actors.get_actor(group_id)
+  end
+
+  defp group_from_args(_) do
+    :none
+  end
 end
diff --git a/lib/graphql/schema/actors/group.ex b/lib/graphql/schema/actors/group.ex
index 6efeb0b2a..1129de042 100644
--- a/lib/graphql/schema/actors/group.ex
+++ b/lib/graphql/schema/actors/group.ex
@@ -244,6 +244,13 @@ defmodule Mobilizon.GraphQL.Schema.Actors.GroupType do
 
       resolve(&Group.find_group/3)
     end
+
+    @desc "Get a group by its preferred username"
+    field :group_by_id, :group do
+      arg(:id, non_null(:id), description: "The group local ID")
+
+      resolve(&Group.find_group_by_id/3)
+    end
   end
 
   object :group_mutations do
diff --git a/lib/graphql/schema/actors/person.ex b/lib/graphql/schema/actors/person.ex
index 65fd6c54a..a7d773c71 100644
--- a/lib/graphql/schema/actors/person.ex
+++ b/lib/graphql/schema/actors/person.ex
@@ -88,11 +88,12 @@ defmodule Mobilizon.GraphQL.Schema.Actors.PersonType do
       resolve(&Person.person_participations/3)
     end
 
-    @desc "The list of group this person is member of"
+    @desc "The list of groups this person is member of"
     field(:memberships, :paginated_member_list,
       description: "The list of group this person is member of"
     ) do
       arg(:group, :string, description: "Filter by group federated username")
+      arg(:group_id, :id, description: "Filter by group ID")
 
       arg(:page, :integer,
         default_value: 1,
diff --git a/lib/mobilizon/actors/actors.ex b/lib/mobilizon/actors/actors.ex
index 9058ec482..cbf854ff6 100644
--- a/lib/mobilizon/actors/actors.ex
+++ b/lib/mobilizon/actors/actors.ex
@@ -461,6 +461,7 @@ defmodule Mobilizon.Actors do
       ) do
     term
     |> build_actors_by_username_or_name_page_query(options)
+    |> maybe_exclude_stale_actors(Keyword.get(options, :exclude_stale_actors, false))
     |> maybe_exclude_my_groups(
       Keyword.get(options, :exclude_my_groups, false),
       Keyword.get(options, :current_actor_id)
@@ -477,6 +478,17 @@ defmodule Mobilizon.Actors do
 
   defp maybe_exclude_my_groups(query, _, _), do: query
 
+  @spec maybe_exclude_stale_actors(Ecto.Queryable.t(), boolean()) :: Ecto.Query.t()
+  defp maybe_exclude_stale_actors(query, true) do
+    actor_stale_period =
+      Application.get_env(:mobilizon, :activitypub)[:stale_actor_search_exclusion_after]
+
+    stale_date = DateTime.utc_now() |> DateTime.add(-actor_stale_period)
+    where(query, [a], is_nil(a.domain) or a.last_refreshed_at >= ^stale_date)
+  end
+
+  defp maybe_exclude_stale_actors(query, false), do: query
+
   @spec build_actors_by_username_or_name_page_query(
           String.t(),
           Keyword.t()
diff --git a/test/graphql/api/search_test.exs b/test/graphql/api/search_test.exs
index 62016294c..7ef116467 100644
--- a/test/graphql/api/search_test.exs
+++ b/test/graphql/api/search_test.exs
@@ -53,7 +53,8 @@ defmodule Mobilizon.GraphQL.API.SearchTest do
             location: nil,
             minimum_visibility: :public,
             current_actor_id: nil,
-            exclude_my_groups: false
+            exclude_my_groups: false,
+            exclude_stale_actors: true
           ],
           1,
           10