99% of Poland Bank issues Debit cards, IBAN numbers, SWIFT codes have all been black listed by most of the western banking/financial sector.
You can not use PLN cards to verify paypal, ebay, amazon, or any other payment gateway. If you link a PLN IBAN to paypal you will get limited quickly.
These are rubbish cards. They are all black listed. Find some better.
I don't agree, you just need to know HOW to use them.
I always provide precise instructions for my customers.
I've been verifying many times Paypal accounts with my cards, I even consider to sell them with already linked, verified, ready to cash out Paypal accounts.
You're probably one of foreign co-branded prepaid card seller/issuer.
Good luck mate.