I had problems with my Umbrel node like that. Sometimes my browser couldn't find it when I tried umbrel.local. Sometimes it would find it and I'd log in and it would be such on "starting" for all the apps and they wouldn't open. I just kept trying every day and eventually I got on and sent my balance to a different wallet and now it's shut down for good. Good luck.
Discussion
Oh i dont keep any funds on there. So im not super worried, but id rather not restart from scratch if i donf have to.
Ah, well that's a relief then. Idk if it was a software or hardware issue, but I had the bare minimum RPi 4gb. I was running a lightning routing node when it started to show some problems and I closed all my channels, then it got even worse where it took weeks of trying to finally log in and get my coins. I wasn't really worried as I had my seed, but it was annoying. I don't know if it can be fixed, might have to start over sorry.
Oh but I will say I think it was still running Bitcoin core fine during that time. When I logged in it was all synced still so makes me think it was Umbrel software sucking.