I think it should show up immediately. However, my guide currently only feature syntax's for Apache and Nginx.
To test CORS for the 'GET' method visit [test-cors.org](https://test-cors.org/#?client_method=GET&client_credentials=false&server_url=https%3A%2F%2Fklabo.blog%2F.well-known%2Fnostr.json&server_enable=true&server_status=200&server_credentials=false&server_tabs=remote)
You should see a 200 OK XHR status.
Compare it to the output from my domain [test-cors.org](https://test-cors.org/#?client_method=GET&client_credentials=false&server_url=https%3A%2F%2Forangepill.dev%2F.well-known%2Fnostr.json&server_enable=true&server_status=200&server_credentials=false&server_tabs=remote)