Etsy Integration by QuickSync

I've been using QuickSync for about a year to integrate my Etsy shop into my Shopify store. QuickSync app does not do this effectively. It causes huge problems with multi-listings. I had lots of issues with items not being pulled across, pictures not being pulled across. Also, in the end, it eventually didn't sync 'sold' items. It puts items back in stock on Shopify that had sold on Etsy, made a complete mess of both stores! I had to manulay got thought all my stock to check! I tried it for 12 months. What a joke. I will never use this app again. Simon at Prestige.