We did some zap tests on this note… we made six attempts to⚡zap this note, at boltring@lifpay.me, over a period of 15 minutes. In each case, we found that your lightning address server did not respond correctly. (The failure point was when we did a GET request to your specified callback URL: https://lifpay.me/api/ln/lnurl/payreq/boltring_620889.) Your server did not produce an invoice, thus the zap failed. We recommend that you use a cloud-based Lightning node which is optimized for Nostr zaps, to get your zaps working.