Etsy Integration by QuickSync

This app completely fucked up my entire online business. It has added and removed inventory from my store for no apparent reason and I have had to do inventory on everything to make sure everything is corrected, and I have thousands of products, so you can imagine how fun that has been for me. They said they would figure out what was wrong for me, but it's been 2 days and I just don't have the time to wait for this. Every day it's removing and adding more of my inventory and I can't keep up. Just awful.