TRIDOS.DESIGN review for inFlow Connector

We chose inFlow over other similar systems due to what appeared to be a superior Shopify integration and for our use case the product and order importing has worked decently however we recently realized that it's not pulling the location data correctly from our orders. This results in mismatched inventory quantities on inFlow side as inFlow fulfills orders using stock from completely random locations / sublocations. After we reported this as a high priority issue, they informed us that since it's a 3rd party developed connector they can't do much about it and this will not be treated as a bug and therefore doesn't have any timeline for a fix. For our use case, it's completely broken and they don't even consider this a "bug" for a paying customer at 350$ a month. This is a feature they advertise, yet it's not functioning correctly in our case (location syncing and matching).