SLOGIN COMPONENT - PROBLEM WITH EMAIL THAT ALREADY EXISTED IN ACCOUNT

Hello,

I installed the slogin component in my joomshopping website. When i tried to login to my facebook profile i noticed that the account email which has been created backend in my site was my email-1@ . This happened because i already had an account with the same email in my site. What to do in order to fix this problem?

Thank you

Can someone please answer to me?