Okay, this one is amusing, and not at all serious but I figured you guys might want to know.
Basically, if you have the game logged in in the launcher, but you haven’t hit play yet, and then you try to login on the forums, you’ll get a… very interesting error. One warning you about corrupted cookies and multiple tabs being open. I thiiiink I understand why this is, it’s due to the login system you use only allowing for one unique instance.
The fix to this is to tell people to close the launcher in the error message.