Half of the day and cannot make it work

I had UrBackup installed in Proxmox as a container for years. But recently I noticed it does not do image backups. I started to fix it and not I cannot make even file backup running. I reinstalled LCX, Client, cleaned everything but nothing works. My client is red.

2025-02-04_19-39-27

Logs are empty

If I select arraw and start backup nothinghappens. I do not see clients in the list unless I click show all clients.

I do not know where to move from here.

I think something happened with keys. but I have no idea where to start solving because there is no error anywhere.

If you reinstalled the server you’ll need to recover the ident files from the previous install. The client will trust the 1st urbackupserver it can find locally, and not any others with a different identity. However if you really removed everything from both server and client, that should not apply. If you think its the client key, extract it from the client settings on the webpage and import it on the client via the urbackupclientctl set-setting command. Restart the client backend afterwards. And all the “NaN” makes me think you ran into something i have also seen before; new client doesnt get (all) settings set from the global defaults, review the client settings for any fields that show that “NaN” and change them, possibly by pressing the button with the “house logo” on it to force the global settings to propagate onto the client settings.
Hope it helps.