avoid problem with disabled 'erase' button and with console error about DOM insertion

src/views/OnboardMeetingSetupView.vue

@@ -317,7 +317,10 @@
       />
     </div>
 
-    <div class="mt-8 p-4 border rounded-lg bg-white shadow">
+    <div
+      v-if="!isLoading && currentMeeting != null && !!currentMeeting.password"
+      class="mt-8 p-4 border rounded-lg bg-white shadow"
+    >
       <!-- Pairwise matches (organizer only: this page is organizer's meeting) -->
       <div class="border-gray-200">
         <h3 class="font-semibold mb-2">Matching Pairs</h3>
@@ -511,6 +514,7 @@ export default class OnboardMeetingView extends Vue {
 
   selectedProjectData: PlanData | null = null;
   showDeleteConfirm = false;
+
   get minDateTime() {
     const now = new Date();
     now.setMinutes(now.getMinutes() + 5); // Set minimum 5 minutes in the future
@@ -896,7 +900,7 @@ export default class OnboardMeetingView extends Vue {
         this.newOrUpdatedMeetingInputs = null;
 
         if (this.currentMeeting?.password) {
-          this.$router.push({
+          await this.$router.push({
             name: "onboard-meeting-setup",
             query: { password: this.currentMeeting?.password },
           });
@@ -977,7 +981,8 @@ export default class OnboardMeetingView extends Vue {
         "Error fetching match pairs: " + errorStringForLog(error),
         true,
       );
-      this.matchPairs = null;
+      // Don't overwrite matchPairs on fetch error - preserve existing data so we don't wipe
+      // good matches on transient failures (e.g. after navigating away and back).
       this.notify.error(
         serverMessageForUser(error as unknown as AxiosErrorResponse) ||
           "Failed to load matches.",