Hey Maria,
I still had a problem with my cards. Only recently joined :). The glue on the card holding it to the paper stuck to the ink so I had to clean it up to make the card readable.
I contacted support about this and the advice was to clean it up, they sent me a nice bar of chocolate to make up for my effort ;).
Still, the printing is likely to be gone way before 2022 when the card expires. I think that is something that could be improved :). By making the letters more bold and whiter.
Also, you really have to light it up well to see the account number etc. The letters are really thin and not the whitest white in the world :).
So those things could be improved in the next batch ;)
-Sander