S2member with facebook login (using other plugin)

hi

i searched many KB and blog and clearly s2member doesnt support facebook login (API integration)
i able to resolve this using UsersUltra which support facebook API login and it also uses wordpress database which solve the problem

However, as i also integrate s2member with mailchimp, if my use uses UsersUltra to login, they wont be added into the list. and thats a problem

is there a way to fix this pls?

I am not sure that it is at all clear.

On the contrary, you can login to WP however you want, and s2Member will automatically recognize when the user has an s2Member role. On some sites I use a completely custom login form while, on another, I also allow members to login via LinkedIn. s2Member works fine with both options.