Maintenance for the week of April 15:
• [COMPLETE] ESO Store and Account System for maintenance – April 16, 8:00AM EDT (12:00 UTC) - 6:00PM EDT (22:00 UTC)
Since disabling add-ons and repairing have not helped, you should go ahead and start a ticket with customer support. You can post the ticket number here if you need any updates on the current status.