I thought it would be an easy solution... and I still think it is, I just realised I'm stumped. How do I prevent customers from bying the same product twice?
We feature an introductory product which we want to give each customer the option to buy only once. I'm sure this has something to do with role expiration, but then again I'm not.
Has anybody done this before? How do I go about it?
Thanks
Francois.
