We have products that are set up to begin one month and end on the last day of the next month but we want them to still be able to sign in after the products expire. So I set up the products that expire and then one lifetime membership. I then set up all the products that expire to give the lifetime membership when you sign up. But if you sign up for multiple products that expire then you get multiple lifetime memberships. Is there a way to get that lifetime membership only once?