It was working fine before the latest update.
Now the phone is erroring out and is prompting me to click on a "go to my verizon mobile" or "call customer service button".
all you have to do is click on "My verizon mobile" when prompted and then just back out of the my v mobile app and the tethering works fine.
And no, i have accidently signed up with a tethering plan.. i double checked to see if it did.
Hopefully this helps a fellow paid foxfi user.