We tested zaps on this note… we made seven attempts to⚡zap this note, at zap@sudocarlos.com, over a period of about 2 hours. Six of the zaps were successfully paid... Your server did produce invoices, however, we were unable to successfully pay the invoices. It may be that your node or wallet service was offline at the time we attempted the zaps. You might want to look into using an always-on, cloud-based Lightning node to get more reliable zaps.

What implementation are you using to produce Zap Receipts? Actually the zap receipts ARE being generated, but they're not being put on the relays requested in the Zap Request, seems you are only putting them on the Damus relay...