Missing Multiprocess Windows support Rated 1 out of 5 stars
This became an issue when ff50 hit. Videos (youtube) can no longer be properly played without "Multiprocessor Windows" support. Going to about:support will tell you if it is enabled. I had to deactivate multiple addons. One of them sadly was TBP which I was using for ... ever really.
As for asking for support on your forum: If you fix your SSL config I will gladly do that. As it stands I can either use http login or activate like SSL 3.0 again to make the site work. This is a no-go in this day and age.
I really like this addon and I would edit this review and give it 5 stars if you'd find a fix for this issue. As of now it is not usable sadly.