diff --git a/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/publicChannels/concord/ConcordCreateScreen.kt b/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/publicChannels/concord/ConcordCreateScreen.kt
index 5429ace9f9..6efc450133 100644
--- a/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/publicChannels/concord/ConcordCreateScreen.kt
+++ b/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/publicChannels/concord/ConcordCreateScreen.kt
@@ -49,6 +49,7 @@ import com.vitorpamplona.amethyst.commons.model.navigation.Route
 import com.vitorpamplona.amethyst.commons.resources.Res
 import com.vitorpamplona.amethyst.commons.resources.back
 import com.vitorpamplona.amethyst.commons.resources.concord_create_action
+import com.vitorpamplona.amethyst.commons.resources.concord_create_failed
 import com.vitorpamplona.amethyst.commons.resources.concord_create_relays
 import com.vitorpamplona.amethyst.commons.resources.concord_create_relays_desc
 import com.vitorpamplona.amethyst.commons.resources.concord_create_title
@@ -139,7 +140,11 @@ fun ConcordCreateScreen(
                         // Replace this form with the new community, as the Marmot and relay-group creators
                         // do. newStack only popped up to the community route itself, which was not on the
                         // stack, so Back from the new community reopened a filled-in create form.
-                        if (communityId != null) nav.popUpTo(Route.ConcordServer(communityId), Route.ConcordCreate::class)
+                        if (communityId != null) {
+                            nav.popUpTo(Route.ConcordServer(communityId), Route.ConcordCreate::class)
+                        } else {
+                            accountViewModel.toastManager.toast(Res.string.concord_create_title, Res.string.concord_create_failed)
+                        }
                     }
                 },
                 enabled = name.value.isNotBlank() && !working,
diff --git a/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/model/AccountConcordActions.kt b/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/model/AccountConcordActions.kt
index d9229873d9..e75c1f3fb8 100644
--- a/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/model/AccountConcordActions.kt
+++ b/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/model/AccountConcordActions.kt
@@ -232,7 +232,7 @@ class AccountConcordActions(
      * Create a new Concord community: mint its genesis (metadata + #general),
      * publish the owner-signed genesis wraps to [relays] (or our outbox), and add
      * the secret-bearing entry to the Community List (kind 33302). Returns the new
-     * community id, or null if not writeable.
+     * community id, or null if not writeable or no relay accepted the genesis.
      */
     suspend fun createConcordCommunity(
         name: String,
@@ -251,7 +251,18 @@ class AccountConcordActions(
         val community = ConcordActions.createCommunity(account.signer, name, TimeUtils.now(), description, relayUrls, icon)
 
         val publishTo = relayUrls.mapNotNullTo(mutableSetOf()) { RelayUrlNormalizer.normalizeOrNull(it) }.ifEmpty { account.outboxRelays.flow.value }
-        community.genesisWraps.forEach { account.client.publish(it, publishTo) }
+        // The genesis is the community: with no relay holding it, nobody (us included, after a
+        // restart) can ever fold it. It used to be fired and forgotten, then the community saved
+        // anyway, so a genesis a relay refused or an app killed mid-send left a community in the
+        // List that could never load again. Confirm every genesis wrap before saving it.
+        val landed =
+            coroutineScope {
+                community.genesisWraps.map { async { account.client.publishAndConfirm(it, publishTo) } }.awaitAll()
+            }
+        if (!landed.all { it }) {
+            Log.w("Concord") { "createConcordCommunity: no relay in $publishTo accepted the genesis; not creating ${community.communityIdHex}" }
+            return null
+        }
 
         joinConcordCommunity(
             ConcordCommunityListEntry(
diff --git a/commonsUI/src/commonMain/composeResources/values/strings.xml b/commonsUI/src/commonMain/composeResources/values/strings.xml
index d83cb04e80..f1900d96b2 100644
--- a/commonsUI/src/commonMain/composeResources/values/strings.xml
+++ b/commonsUI/src/commonMain/composeResources/values/strings.xml
@@ -3614,6 +3614,7 @@
     <string name="concord_channel_rename_save">Rename</string>
     <string name="concord_channels_empty">No channels yet.</string>
     <string name="concord_create_action">Create</string>
+    <string name="concord_create_failed">No relay accepted the new community, so it was not created. Check the relays and try again.</string>
     <string name="concord_create_relays">Relays</string>
     <string name="concord_create_relays_desc">Relays that store this community's encrypted messages. Leave empty to use your own.</string>
     <string name="concord_create_title">New Concord Channel</string>