Unable to sign in and retry (new user)

Tried to "Generate the app" from the GPT Web App Generator interface and was asked to sign in to GitHub, after signing in there was an error "An unknown error occurred while trying to log in with the OAuth provider." And I couldn't retry the process even after 2 hours as it kept redirecting me to the same error page.

I am unsure if there was an error with my login, or is it an issue with the OAuth provider, please help