in the app store the newest release is 0.24.0 (platformVersionSpec >=33.0.0 <34.0.0) and this catalogue ships Nextcloud 34, so the store offers nothing this server can install and the app is not server-shipped — occ app:install cannot succeed. Acknowledge only when the target server is on rung 33 or below; upstream may well publish a 34 release, and make catalog/freshness reports this guard as STALE the run after it does.