Just for clarification.....
You don't purchase the Auctiva U-Pic plan Insurance by selecting insurance during the PayPal label purchase process. That Insurance purchase capability on PayPal is ONLY for the carrier's insurance, e.g. using PayPal USPS Click-N-Ship the insurance is USPS postal insurance (not Auctiva's).
You pay Auctiva directly through your Auctiva account for their insurance plan.
That misunderstanding seems to be common, so please forgive any undue comments.
I agree with advise to just reprint the label.
Danno