Why is Stocky resending previous purchase orders?

[NicolaHomefront]

Anyone having trouble with stocky resending previous POs. Over the last few days I have had feedback from our vendors that previous POs emails which have been received already are being sent again with new POs. Nothing has changed in the procedure used but when a new PO is created and sent through stocky app previous Purchase Orders are being sent also. This is causing huge confusion with our vendors as they have to check each PO to make sure it hasn’t been dispatched already. Anyone have any ideas why this is happening