that's weird. I've got a 304 but also a 200.
if you have a redirect (301) you should be redirected somewhere, right?
Anyway if it redirects and reach it, it should be fine, the question is if the redirection happenes effectively 
When I send a curl request to www.damupi.com/.well-known/nostr.json I get this:
HTTP/1.1 301 Moved Permanently
Content-Type: text/html; charset=iso-8859-1
Content-Length: 252
Connection: keep-alive
Keep-Alive: timeout=15
Date: Thu, 05 Sep 2024 10:01:50 GMT
Server: Apache
Location: http://www.damupi.com/.well-known/nostr.json
Moved Permanently
The document has moved here.
Discussion
Checked again and it seems my first guess might be right: