Shit, btcpayserver upgrade must have broken something. Fixing it. Self custodial zaps demand some support. Worth it tough :) Anyway I received the sats 🙏
Discussion
Have no idea why btcpayserver stoped generating zap receipts after upgrade. Decided to install nostdress instead from nostr:npub1nxa4tywfz9nqp7z9zp7nr7d4nchhclsf58lcqt5y782rmf2hefjquaa6q8 and it's working great.
Would be nice to have a ready easy to install umbrel package for nostdress.