If I add a bank account as a payment method, can customers skip shipping?

Is there a glitch on the platform? This week it’s been really frustrating adding products, and now shipping prices aren’t right, they show differently. I hope someone replies.

I got an order with two boxes and issued one label for both. One box reached the customer and the other didn’t, because there was only one label. How do I issue a new label for the other box?