Maintenance for the week of March 2:
• [COMPLETE] ESO Store and Account System for maintenance – March 3, 9:00AM EST (14:00 UTC) - 12:00PM EST (17:00 UTC)
Had same problem. I tried with no add-ons turned on and got the same problem. I all so tested if it would load in if left on the constant load page but after nearly 1 hour I force quit the game.
I all so had the same problem at The Vile Mance Public Dungeon.