Kendal Mint Co® review for Shopify Marketplace Connect

The App works but beware despite turning off "Import Orders" (which Shopify explicitly say is the only chargeable part of the app) Shopify began charging me significant amounts, going against their own terms and conditions, and without my permission. I was not importing orders, just syncing product inventory to our Amazon account (which is a significant size now). They decided to start charging us a fee for all our Amazon orders completely unrelated to anything Marketplace connect. My money is still being held although apparently the billing team are looking into it but it does not seem to be going anywhere.