Using a 3rd party app to connect to Amazon

[TCAS]

Hi, 

I've been trying to use a 3rd party app to link my Shopify (Print on demand) products to Amazon for almost 3 months, but unfortunately it doesn't seem to work properly & customer service at the App is absolutely terrible. They keep telling me that they're working to fix the issues, but very little, if anything, is improving. 

Does anybody have any experience of dealing with CED Commerce and if so, what's is the secret to getting them to make the app work properly?

TCAS

[g_langenderfer]

have you tried any of the other amazon importer apps? https://apps.shopify.com/search?q=amazon