Olá nostr:npub1m5mr8y7wgvcufav43hgda376xsm0t5qrerur30m23ek6w8gmn88q9hympt

From what I was able to determine, your relay does not comply with NIP-11. It returns a web page instead of a JSON structure.

"When a relay receives an HTTP(s) request with an Accept header of application/nostr+json to a URI supporting WebSocket upgrades, they SHOULD return a document with the following structure."

https://github.com/nostr-protocol/nips/blob/master/11.md