Why isn't my Cowcow app working with Shopify?

How do I get this to work? Customer service doesn’t know how and I see others on here was successful integrating the two. What is wrong here? Why cowcow keep advertising something that doesn’t work anymore or fix it?

What’s not working? If it’s the app itself is would certainly be on cowcow devs to investigate. Perhaps with more context we’d be able to direct you better.