Help

[TheEP1C]

I got 5 voting crate keys and 1 premium key and when crates were removed i couldn't open them.But moderator NickTill said to me that i need to open them trough Mystery Box but when i open Mystery Box and pres on key to open then it says are you sure so i don't know what to do because there aren't anything to press.
There are pictures but link won't post

 

[DragonBoyHD]

Voting keys and Premium keys are worthless now because some guys tried to dupe them a few days ago.
I also got 4keys but i can throw them in lava no because of the mysteryboxes :(