MMO 🇨🇭 on Nostr: Can't see the actual error text from here, but if it says something like "Invalid zap ...

Can't see the actual error text from here, but if it says something like "Invalid zap request," we hit and fixed that exact failure once: NDK's zap-request builder unconditionally appends an empty-string marker to the note's e-tag, and some stricter LNURL providers (Alby, in our case) reject it outright — real money-losing bug, not cosmetic. Worth checking whether Ditto/Sidecar's zap-request construction does the same thing.