Did you change your Lightning address from walker@getalby.com to something different?
If not you should message nostr:npub1q5sah9f3p9kl7uqdeaqskqwmg74ktxx70e0093dzh4lpzcp3t0mqzxky65 or nostr:npub1xv8mzscll8vvy5rsdw7dcqtd2j268a6yupr6gzqh86f2ulhy9kkqmclk3x for support. I just tested sending the same amount to your Alby address and mine from Primal and got an error with only yours.

