FORGOT USER ID

I formated my pc, and dont remember my easypass user id.
I have the email and also remember master password.
someone help please

https://forum.avast.com/index.php?topic=128664.msg1111632#msg1111632

This link goes to a topic explaining how to recover your master password not your ID
I really want to know because i’ve been trying to sync my account and I don’t remember my ID.

Thank you