Prodigi Global Print on Demand

I was interested in this app as a pod from the UK. But they import all your products over from your store. I was informed you could toggle this off, and they do this if you want them to fulfil other orders. Firstly products are linked to other companies. So why would this company fulfill them. They couldnt answer the question why they do this. They also asked if my store was Etsy when my message quite clearly said it was a Shopify store. Uninstalled as I wasnt confident the experience would go well.