I ship through Paypal but not that way b/c it doesn't show up in my sales as shipped. Drives me nuts!
I just go into my account and print it from the tab there.
A few weeks ago I printed the label your way- it was Saturday and by Monday I forgot I did it so I did it again- too late to get a refund for the first label but believe it or not Paypal refunded me anyway b/c I told them how it doesn't show up in the sell page.
Have I lost everyone yet??? LOL
BTW mine was an International label and the time had expired for me to void it. I couldn't believe Paypal reimbursed me but they did.