Maintenance for the week of October 6:
• [COMPLETE] ESO Store and Account System for maintenance – October 7, 6:00AM EDT (10:00 UTC) - 4:00PM EDT (20:00 UTC)
Do you really want to lose customers, because this is how you lose them.
In case you have this issue just open System Preferences>Security and Privacy. Go on Privacy tab. Click on the lock on the left bottom corner, enter your password and check "ESO" and "Zenimax Online Studio Launcher". Will fix the issue.