Xpayments and Moneris Direct Post
 

Does anyone have xpayments working with Moneris direct post? I keep getting the error "api token mismatch". I've triple checked the api token in my Moneris admin panel, as well as the store ID. I do not have 3D secure turned on. I've set the response method (in moneris admin panel) to send to server as "post" (according to xpayments documentation) and I have the approved/declined URL as
"https://payments.mysite.com/payment.php" - I'm at a loss here.

Note: I've set up xpayments with Paypal Payments Pro api and that is working successfully. Right now I have 2 merchant accounts - Moneris and Payments Pro - and I'm trying to decide which one to continue with permanently.