The plugin allow users to login with google, facebook etc...

But if the user logged in and don't have an account the plugin create an account for him and there is nothing you can do to stop it.

Looking now it created me many spam accounts and i will have to use different plugins instead of this one and i also need to remove all account (which is pain in the ass).

It's to much off a downside so while it's really good and the price is also great it would be smarter to use other plugin instead.