EBS Payment Integration on CS-CART

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. If you know better php, js, database programming you can do that. Also note if you are aware with cs-cart payment integration only those bidders join for this project others please don\'t spam here. Budget is around $60-75 ONLY Time around will be 3 days only. No more extension will give. NOTE: NO ADVANCED PAYMENT. PAYMENT WILL BE RELEASE AFTER THE PROBLEMS SOLVED ON OUR SITE, NOT ON DEMO SITE.... NOTE: AFTER YOU WIN THIS PROJECT AND SAID YOU UNABLE TO COMPLETE I WILL REPORT THIS TO FREELANCER STAFF FOR FRAUD CASE.