OK, every time I try to go to advanced settings when trying to send a PM I get this. I did add uBlock Origin to Firefox, could that be causing it? I starting getting the fake “Urgent Firefox Update” with the file that it wants you to save. Online says uBlock stops it.
Update: I disabled uBlock for this site and it let me go to advanced settings. When I try preview or the send button, I get it again.
Update 2: I just tried to send a PM using my ipad and I get the same thing.