to remove and click "remove".
2) click on the album you want to remove a guest from. click on the number of album members at the top next to the album title. this will show you a list of album members and you can click remove for any album member you would like to remove.
usually the reason why guests you don't know join your album is because the album code is very generic. while you do have the option for various privacy settings, the album code does act as the password to the album. if your album code is "album", it is likely another guest may try to create or join 