I know this is probably not the right place to ask this question, but I hope it reaches someone who might can look into this:
I try to log in to discourse.jabref.org via github oauth but all I get is this error message:

Sorry, there was an error authorizing your account. Please try again.

In the github settings, I can see that I authorized jabref's discourse to access my e-mail.
I even tried with Google Chrome and Firefox, but I get the same error message all the time.

I also revoked the access in github's settings, but this does not help either.

If I search for this issue, I can find some information regarding broken discourse url redirects. Maybe the discourse has some problem?