Sometime around 6:00 PM Eastern Time today (2025 January 30), the system automatically upgraded our NodeBB software to a new version that proved problematic.
Took many trials and errors to find a restoration point that has a slightly older version of NodeBB that works well, and the most recent workable restoration point happens to be one from 2025 January 21. So ... very sorry, whatever you have posted between 2025 January 21 and now cannot be restored.
For the time being, I have disabled auto-update so the system won't automatically upgrade us into a bad release. Will re-enable auto-update after the NodeBB development team releases a solid update.
(FWIW, other people are seeing similar issues, e.g.: https://forum.cloudron.io/topic/13213/issue-starting-nodebb-on-cloudron-after-server-restart )