Which error?
It's usually because you already have one.
Discussion
Just says error. Perhaps it's because I'm tunneling through tailscale or something. I'll try on my local network later today and see if that works.
Oh I bet it's because I set my Lightning address in amboss as my zeuspay address. So I "already have one" but I can't remove it to test... If I remove it and click "change address" it says invalid address and if I remove it and click save info at the bottom it doesn't save the lightning address.
Should be unrelated