You could try ironing then. Put a towel over the card, no steam, and quickly pass the iron over the cards.

This, BTW, is just a guess.

I was thinking that but I’m scared it will melt them. I’ll give it a go anyway

Try asking the printer for a refund or something since the cards are defective.

I think you deserve a refund

What have you got to lose by trying it out one one?

Contact the company and ask for a new set. You paid for a product and should get it.

Have them replaced, as a printer myself, what you describe is unacceptable.

Dude. balls. get some!