Logging with Facebook/GitHub/Google all shows “403 Forbidden”, while I can’t receive a magic code via email.
We have some general tips for login issues in this help doc.
However we also just deprecated Facebook login so I’m wondering if that’s the issue you’ve been facing–in that case hopefully this doc helps!
I believe this page could use a bit more work, for example 403 forbidden also seems to be caused when a proxy or other traffic forwarding service is detected like tor. A few months ago, I was logged out of my glitch account because I had a cloudflare warp enabled which glitch disliked for some reason even though it forwards the real ip.