After the maintenance, my client has become completely unstable.

For some (obviously) unknown reason, I am receiving an "Unknown Error" after logging in.
My character will sometimes enter into the world, however, I receive an "Unknown Error" after being logged in for a Maximum of 2 minutes 30 seconds.
Sometimes I am booted back out in as little as 18 seconds, and other times, I cannot even get to the character selection screen.
I used a stopwatch to get the above times, no estimations have been made.
Each time I have received this "Unknown Error" message.

Steps I have already tried:
Forcing the client to "Check for Updates"
Forcing the client to "Repair"
Disabling all addons
Deleting the Documents\Elder Scrolls Online folder, including all addons
Repairing after the Documents\Elder Scrolls Online folder is deleted
Shutting down the client and waiting over 1 hour before attempting to log back in
Searching for help from the "Support" link on the Launcher
I have also restarted my machine after each one of the above steps

None of these steps have made any difference at all.

I need a solution from ZeniMax support staff. This is clearly not on my end.