Since Wrothgar, Ps4 users will occasionally experience a bug that prevents them from logging in and kicks them back to the main screen when they attempt a log in after a very long loading screen. To log back in, you have to go to the PS4 System Storage and delete ESO settings data. This will not your delete your characters, and should be a 10mb file. It will prompt you to choose server and readjust brightness/screen settings.
ign: ATTACKO
PS4 NA
First NA Completion of VMoL Hard Mode