Shopify Marketplace Connect

I started using Shopify Marketplace Connect today, and to my surprise, it didn't work. But I contacted the support center, through live support, and Joy V gave me instructions that were easy to follow and solved all issues. Of course, the problem wasn't the app, but my lack of knowledge. So if you have doubts about using it to integrate into Amazon, don't worry anymore, stop looking, you found it. I tested more than 10 apps, and their support won me for life, and I'm not even a paid subscriber yet.