AbleCommerce Shopping Cart Software

I am using Stone Edge and soon Able. Stone Edge recommends using a API certificate over using the API signature. But for some reason Paypal wont let me have both a certificate and a signature.

We used to support the certificate model, before the API signature existed. It was problematic for us. The certificate had to be installed on the server which sometimes made it impossible for merchants using shared hosting. When PayPal created the signature option we chose to only support that method.

Ok it i will just have to change stone edge to also use the signature.