Same issue.
Try logging on to your ACCOUNT on the website.
If you can't LOGON, like after clicking on the button
the page just refreshes and you still see the LOGON screen,
THEN you have a problem SAME as mine.
Seems to be reachability issues going to ESO.
I RESOLVED it by using a VPN connection
which gives you a different routing and reachability to ESO.
Still can't log in - 8:30pm PT 8/18/2023
Error 201, error 107, error 307, error 103
@ZOS_GinaBruno @ZOS_Bill @ZOS_Kevin
restarting client didn't work
repairing client didn't work
restarting internet didn't work