Put in an appeal for the ban. Lots of people on ps eu are being affected by it. I think its related to the bug a few weeks ago with endeavors resetting in reapers march
I haven't had to appeal myself, but I think it would be via raising a ticket on the ESO website. Not sure if replying to the email received would also work
Try here selecting i can't log in
https://help.elderscrollsonline.com/#en/home/category/16