I was informed about something going wrong here and investigation showed that it's worse than I thought. My Contabo Object Storage started claiming it's full, even though it's only half-full. I opened a ticket to tell them to fix their shit, but knowing their speed, it might be a few more days :-/
That's what I get for choosing the budget services...
I really need to do that upgrade too and am not terribly looking forward to it as it looks complex