Inventory Sync, Multi store TP

CAUTION ADVISED! Whilst all seemed to be fine and smooth with this app, we have discovered that if you manually enter an order (which will automatically occur in your default location) and there is zero inventory in that location, when you change the fulfillment location to one of your warehouses that does have stock, Tipo Sync does NOT recognise that the location change puts the inventory quantity back into the default. The location change normally balances out the quantities and puts the default location back to zero BUT it only sees the original negative so when you balance the quantities out, it performs another correction to remove the original quantity. This only happens when you have a quantity of zero, so you have to manually add the quantities back in to correct this. Not too much of a problem if you don't have stock of that item for a while, but if you receive incoming inventory your stock levels will be less than what you have physically if you don't spot it and perform the manual correction. The developers deny all responsibility even after seeing screenshots; they merely offered us money off!