Not accepting AMEX & Discover?

[isaacr25]

I have Authorize.net installed (AIM) and in Test mode. In Admin >>> Configuration >>> Credit Cards, I have VISA, Mastercard, American Express, and Discover all set to 1. When I try using the test card numbers for AMEX and Discover, its saying that the store is not setup to accept those types of cards. Please advise. Thanks in advance!

[yellow1912]

I'm not sure about Authorize.net, but when I sign up with Linkpoint I had to specify that I want to accept American Express (it's like they consider it a separated service.), you may also want to check with Authorize.net about your situation.