Shopify Order Printer

They say over and over I can print pricing labels from purchase orders if I have this. Nope. Doesn't even come up as an option. And no one seems to be able to help. Just sends me the same screen on how to do it. Even though I say those drop down menu choices aren't there for me! Ughhh. hundreds and hundreds of labels each week from purchase orders and can't print from purchase orders! What a waste of time printing them!