Since approx. 30 hours it’s not possible to login into this communityhub.strava.com. Regardless of browser and system, private window or not, the error after click on “LOGIN” is always:

Mostly this comes without asking for login data, only private browser windows asks for that but the result is the same. By the way, login to www.strava.com works faultlessly.
Obviously this problem is not everywhere else I couldn’t submit this post. This is a browser that I don’t use for www.strava.com and I was already logged in so I guess my saved login data are still valid.
Considering that only a handful of people wrote something in the last day it seems widespread but that can be coincidence and it’s only me.