Hi Mathieu,
Yesterday I updated Buddy Press to version 11.0.0 and found that the login page stopped working after the update. The system simply prevents users from logging in. When a user tries to log in, the message “Session expired, please refresh the page and try again” appears. And so all the time. This may be some sort of conflict with my Rehub theme. I’ll check later. In the meantime, I had to roll back to the previous version.
Anyway, thanks a lot to the Buddy Press team for such a great plugin.