Westpac Payway Stopped Confirming

I use the Westpac bank PayWay credit card system and for some reason it has suddenly stopped working properly. The credit card payment is made and I receive an email from the Westpac saying a payment has been made however CS-Cart has stopped sending me a copy of the order and in t5he Orders section they are listed as "Incomplete"

Can anyone help me to resolve this issue...thanks