I used this app when they airwave something and used to ship within 2-3 days. Then they rebranded and everything went downhill. Now orders take 10+ to ship and they tracking numbers are missing numbers. I contacted customer support about it and they acknowleged that they were incorrect. Several months later and they still haven't fixed them. I give them an extra star because the quality of the shirts are good but it's not them that make it. They're just a middleman.
If you don't mind the shipping times and the quality of the shirt than this is the app for you.
If you sell on Amazon or Ebay or are measured by shipping metrics than look somewhere are else.
I had to delete all of my listing from this app.