Hello @alexftth and welcome to the Cloudron forum
Some questions so we can bet a better picture.
Did any app updates happen in the timeframe of this issue arising
Did you restart the server since then? If no, please restart the server once
When restarted, please ssh into your server and as root run:
cloudron-support --troubleshoot
Check if it is working now. If not, share the output of this command and also run:
cloudron-support --send-diagnostics
This will generate a URL with details about your server, share this URL with us here as well. (this also includes IPs and DNS names, if you don't wish to post this publicly, send this with a DM to me)
Also re-run the commands you used inside the container and run them from root.