I still don't have the verification badge for BTCGandalf.com, do i? 
Discussion
No
Seems like you do for me
I cant test any mobile clients, but all the web clients ive tested dont show it.
The JSON file looks correct. but its still missing the "access-control-allow-origin: *" header.
I see it
You do on Damus but you’ll need to sort out that CORS header for it to work across the board.
I do not see it on hamstr.to using Firefox.
I took a look at your nostr.json. I think you need to have your name as your username="BTCGandalf", not your display name="GANDALF."
Also, you need to enable CORS "GET" method in your .well-known directory. It's not appearing as reachable for me: https://cors-test.codehappy.dev/?url=https%3A%2F%2Fbtcgandalf.com%2F.well-known%2Fnostr.json&origin=https%3A%2F%2Fcors-test.codehappy.dev%2F&method=get