When printing a label for an item being sold by weight (i.e. $7.29 per pound) the item needs to have "Pound" as the unit in your Square library. If this is left as the default "Per Item" unit your labels will print "Per Regular" or "REG" instead of "Per Pound" or "LB".
We utilize all of the information on the label from your Square item library, except for the product dates, the tare weight, and the label format. In order for us to provide the most accurate labels for your business, all information will need to be correct in Square.