Hi Mark,
Please check the packing option you have selected. Please confirm you are not selected pack item individual option.
If that to our support forum along with the following details.
Kindly provide us the following info –
– Screenshot of the plugin settings page
– Enable debug option in plugin settings page and then place an order from the cart page. You will see a request and response info. Copy this in a text file and send it to us.
We will analyze the debug response and immediately provide you the solution.
Let us know if you have any query. We will help you.