DrByte, I hope you can help me, as well. I have recently siged up for Authorize.net. I can process a card online at Authorize.net using the vitrual terminal without any issue. I receive an email that the amount has been paid and the transaction appears in unsettled transactions, so all appears to be working correctly there.

When I come over to ZenCart to set things up, I can't get the card accepted. I have set up and installed Authorize.net (AIM)

Enable Authorize.net (AIM) Module
True

Login ID
XXXXXXXXXX (X'd out for privacy purposes)

Transaction Key
XXXXXXXXXXXXXXXXX (X'd out for privacy purposes)

Transaction Mode
Test

Authorization Type
Authorize/Capture

Enable Database Storage
True

Customer Notifications
True

Merchant Notifications
True

Request CVV Number
True

Payment Zone
--none--

Set Order Status
default

Debug Mode
Off

Here is the message I get when I try to process the same card I used on the Authorize.net site:
The credit card number starting with 5581 was not entered correctly, or we do not accept that kind of card. Please try again or use another credit card.

I have tried my own card, along with the automatic approval card numbers given in the setup portion of this module.

I also have a big red bar across the top of my site announcing "AUTHORIZENET IS IN TESTING MODE". I can't get it DO anything in test mode, so I'm afraid to put it in production mode & have customers mistakenly thinking they can pay with a credit card, but having that announcement is kind of spooky to me.

Any ideas what the problem could be???