I'm setting up a new e-commerce site with an existing authorize.net account.
The new site is a WordPress site, using the Easy Digital Downloads plugin with the Authorize.net extension. The site is here: http://swcoalition.wpstagecoach.com/store/
When I try to check out, I get the following error message:
AuthorizeNet Error: Response Code: 3 Response Subcode: 2 Response Reason Code: 13 Response Reason Text: The merchant login ID or password is invalid or the account is inactive.
I know that the account is active, because I am currently using it on another site. Authorize.net customer service tells me that my account is compatible with AIM. I have verified over and over that the API login ID and the Transaction Key that I have saved in the plugin settings match the login ID and transaction key in my account.
What else can I do to get to the root of this problem? I have contacted the developer of Easy Digital Downloads, and he has not seen this problem with the thousands of other people who are using his software, so I don't think the software is the problem - I think it has something to do with my authorize.net account.
Thanks!