One of the oldest trains, there are bound to be some defective wagons!

I have found some VERY old keys (the most recent are 6 years old).
I've certainly never redeemed them, but I don't know how long vendors have to provide these keys.
No matter which wagon you get on, you are 100% in agreement that I may delete the giveaway!
I hope that everything works, but I just don't know with such old keys.
It is quite easy to get on this train. Minimum Lvl 2 (possibly a little higher in higher quality games). And of course you have to solve the puzzle, which I'll come up with in a moment:
/3VPkF/yawaevig/moc.stfigmaets.www//:sptth