Sending through multiple product details attached to order

Hello,
We are trying to capture specific field data from all the products that are attached to our order that we are sending through to salesforce.

We have the pro version of the plugin but cant figure out how to capture product info when there are more than one product attached to the order.

Currently we can only capture field data from the first product item on the order. So product item #2 for example is completely ignored and not sent to salesforce.

How do we get round this issue?