Okay, I think #Universeodon should now be up, running and stable. There were a couple of bits I missed when I had deployed everything ready for the DB migration so we ran into some issues where we just got crushed with load and the server couldn't handle it properly.
It has flagged some other issues that I wasn't expecting when it comes to capacity and load but those are things I should be able to solve in due course and as part of moving MastodonAppUK over.