What exact error message are you currently getting?
I was put on a login queue, after the time counter went 0 and starts to load the next page, the error message popped out after a few seconds, then the screen went blank without any interactable things but a background. It seems to be something quite universal that happens to multiple people at once. I personally restarted the game launcher and it seems to have been fixed, so far not having the trouble again yet. Nevertheless, what concerns me the most is a sudden drop from the server and unable to log back, as if the account was hacked and stolen.