Shopping cart problems

Hi.
I am not even sure where to start.

I am close (I thought) to making my site go live. I am using authorize.net.

I was using authorize.net's testing server and was getting receipts from them and proper emails from hikashop.

I am still not live (placed the site on "maintenance" status) and am doing final testing. I did take my credit card off of "test mode" and am practicing live transactions with the intention of deleting them on the authorize.net site before they settle.

Now . . . .

The cart asks for the security code, but I can put in any numbers and it works

The customer is not receiving any emails -- either creation, confirmation or receipt nor is the Administrator receiving receipts from Authorize.net, just "confirmation" emails from Hikashop

I was getting everything before in test mode.

where do I start troubleshooting this? I am at a loss. there aren't too many options on the Authorize.net plugin page in Hikashop to change. I have tried as much as I can think of.

thanks.

Thanks so much.
Makes sense. I was a bit frustrated and did not think to try that. I will look into it.

Thanks for your awesome support and your patience.