@allothawl Thanks for your post, next time could you place it in its own thread? This was just a post as a informational post in what to include when you create your own new thread.
I did take a look and I have not tested the gateway your using as it technically is not a payment processor. It sends credit card information via email and does not actually take funds to process the order.
This plugin is designed to work with payment processors. To be honest I feel that plugin is something to shy away from because emailing credit card information seems dangerous.
If you are using a payment gateway such as Authorize.net (CIM) or PayPal (NOT Express) and NOT using hosted fields, you should see the gateways displayed.