Okay. I don't think it is Amber.
Looks like a Nostrudel or Umbrel issue.
On the Mac, I'm getting a source map error.
On Linux I am getting a Cors issue and a gateway timeout of https://mostr.pub/.well-known/nostr.json?name=goodboyuv_at_poa.st
I may need to brush up on my React to delve further.