[Hire] Payment Integration Problem

I am using cs-cart 2.1.4 pro version. I already have a EBS payment integration kit for cs-cart which EBS company provided me. I installed that integration but the problem i am facing, when i checkout the product the total price showing wrong on EBS payment gateway site. When we return from ebs site its showing fatal error. These problems you have to solve. You can check the attachment to better know the problems.

So interested developers can PM with their best quote.

Time around will be 3 days only. No more extension will give because i need it urgently