Today while doing some maintenance on my server, it stopped responding to any commands after a restart. I tried to fix it, but unfortunately, it wasn't possible. So I had to buy a new server and set up everything from scratch. The Notifier was down from 11:25 (UTC) until ≈15:30.
Since I couldn't restore the database, I had to use one of the latest backups. Thus the data about the RSS feeds, users, etc that have been changed/added since ≈2022-03-06 00:00 UTC has been lost, unfortunately. The good thing is that I could recover email messages (as they're stored on the disk), but they just aren't visible in the feeds. So if you expected to get some important message today but don't see it in the RSS feed, please contact me at hi@notifier.in. I'll try to find it.
I'm sorry for the inconvenience! Let me know if you have got any questions.