Hi there,
Apologies that you are facing issues while trying to upload the product using Product Lister for eBay. The error, as evident from your reply above, usually happens when we are unable to pick up the correct shipping template on the basis of weight. When you create a template in our plugin, you have to assign it to a product weight range. Doing so will give you flexibility of assigning shipping based on the product weight rather using one single shipping policy for all your products. Thus, please ensure that the product has correct weight and the weight range is defined in the template and the product which you are trying to upload lies in the defined template weight range.
Please let us know if you are facing any other issues