payment api not being sent o paypal

I need help quickly!!!! I have talked to Paypal and they have reviewed by the cart, here is the issue below of what is happening. I have customers already ordering items and the payment is not going though to paypal!!
Sarah


Shopping cart recording orders but no Payment sent to PayPal

Discussion Thread
Response (Justin) 11/23/2009 11:53 AM
Hello Sarah Albright,

In regards to our conversation I have created this service request for further inquiries. By replying to it in the spaces provided it will be directed to myself or another PayPal Merchant Technical Support member if I am unavailable. From review of your API history I show that the shopping cart is sending PayPal the SetExpressCheckout and GetExpressCheckout details APIs to PayPal but is not sending any Payment APIs (DoExpressCheckoutPayment and DoDirectPayment). For example I placed an order through your shopping cart (Order #11) and received a thank you page for payment but no API was sent to PayPal. You will want to have you shopping cart provider check the server logs/integration to find out why these APIs are not being generated and ensure that no orders are marked as completed without an success API response.

Also included, for questions regarding your PayPal account, or for general inquiries, please feel free to contact our Business Support line toll free at 866-837-1851. Agents are available from 6:00 AM CST to 11:00 PM CST Monday through Friday, and 10:00 AM to 10:00 PM Saturday and Sunday.

For this or other technical inquires, our Merchant Technical Support Team can be reached at 800-852-1973 during the hours listed below. The PayPal Merchant Technical Support is available to assist you Monday through Friday between 8:00 AM CST - 9:00 PM CST.

Sincerely,
Justin
Merchant Technical Services
PayPal, an eBay Company