Why the hell was my game reset to level 1?!

Sounds like it could be a different Persona in your EA account.

If you click on your name in the top right corner a menu should show with the option to click My Account.

In there you should see the following:


Select A Default Persona

To better customize your experience with EA.com games and services you will need to select the default persona for your account. Please select an existing one from the list below.