Good morning, all,
Just as a data point, I've had no trouble since the bad lag a week or so ago was resolved. The cert problem never emerged for me and no trouble going from place to place. I'm on Windows 10 up-to-date, on a Dell G-3 laptop. Of course I've only just started my third toon, none of which are much past beginner quests, so maybe it's to do with that.
This is not to downplay the seriousness of the issues Crighton and others are having, just informing that it's not everybody. Or at least, not me ... at least not yet. 😕 Best of luck with all of it!
Hsien (pronounced Shen)