I did resell those cards back in the days. I need to figure out how many cards that I sold were not redeemed and contacted the people that operated it. Once I hear back, I will let you know.
PS: Before people run on a spree and "dox" me with my old address, please talk to me first if you bought any cards from me. Cause I can already smell fire and hear the pitchforks. I moved since I sold the cards.
The very first item of the FAQ on my site back then was:
WHEN DO THE CRYPTO SCRATCH CARDS EXPIRE?
Our Crypto Scratch Cards have an expiry date of 5 Years on them from the date of printing, providing that the code has not been used.
I am not very active here atm but can be reached via TG or Discord.