Looks like a CORS problem. Needs a header fix. https://cors-test.codehappy.dev/?url=https%3A%2F%2Fday.ag%2F.well-known%2Fnostr.json&origin=https%3A%2F%2Fcors-test.codehappy.dev%2F&method=get

Hope this helps you diagnose how to address it. https://acceptcryptoorg.wordpress.com/custom-nostr-nip-05-domain-identification-with-windows-10-wordpress-for-beginners/ Archive Today Mirror: https://archive.ph/goUIC

It’s not supposed to be npub. It’s supposed to be in hex format: c4f5e7a75a8ce3683d529cff06368439c529e5243c6b125ba68789198856cac7

It's failing the cord test. Test your link here. https://cors-test.codehappy.dev/?url=https%3A%2F%2Fday.ag%2F.well-known%2Fnostr.json%3Fname%3Dnathan&origin=https%3A%2F%2Fcors-test.codehappy.dev%2F&method=get