Hi there,
Thanks for reaching out in the Community!
Printing Sales Orders, Invoices, and Packing Slips should be a quick and easy process for you. I'd like to have someone take a closer look at this. I recommend reaching out to our Desktop phone support agents at 877-772-9158, which is available 24/7 for your convenience. These agents will be able to share your screen and shed some light on what may be causing this discrepancy in your account.
I'm confident they'll get you back on track in no time.
Have an awesome day.