The one thing that looks weird and like it could be an issue is that I see this on your profile page in Nostrudel:
mike@mikehardcastle.com
Unable to check DNS identity due to CORS error Test
Where "Test" is a link to https://cors-test.codehappy.dev/?url=https%3A%2F%2Fmikehardcastle.com%2F.well-known%2Fnostr.json%3Fname%3Dmike&method=get
Where I see Results: "This URL will not work correctly with CORS"
URL in question is https://mikehardcastle.com/.well-known/nostr.json?name=mike