You can write down your seed words on a piece of paper yourself and it will become a paper wallet. You dont really need to use bitadress as they were hacked some time ago I think. Or maybe it was the other service I forgot its name. What difference does it make if it has some art and a qr code on the paper instead of seed words?

Some people don’t even advise using printers btw.

Get some paper and a pencil, write your seed words down. No need to reinvent the wheel