My Android was reset but it keeps asking me to sign in with a Google account, why?

[AC Question]

My android was reset but it keeps asking me to sign in with a google account

Why does it keep asking for my previously linked email?

 

[belodion]

My android was reset but it keeps asking me to sign in with a google account

That is a security measure. The phone is useless as it is. Get a refund.