I setup alby hub and alby go on my mobile a few weeks ago and it has been working fine. I just email them to see if they can help.
Discussion
I ran into a similar problem where restarting my AlbyHub device (Umbrel) and then logging the AlbyHub back into Alby restored functionality. Lately I have been using minibits for nostr zaps since I typically get better fees on minibits than with my AlbyHub with phoenixd on Umbrel.