Maintenance for the week of January 12:
• PC/Mac: No maintenance – January 12
• ESO Store and Account System for maintenance – January 13, 9:00AM EST (14:00 UTC) - 12:00PM EST (17:00 UTC)
Have you tried finding someone that has the quest you were looking for and seeing if them sharing it with you will work? I doubt it, but it will help in eliminating what you have and have not tried.