Need Help for Darkyk Key Changer

perhaps run darkies as administrator

yes,but after checking Cache Integrity the ArmA 2 OA folder is only with the first string in your screenshots,the Default one...don't know it this means bad,anyway i'm downloading and installing again the game,and hope tomorrow the KeyPendingApproval error won't appear
ps.tried to check the key on steam and an error shows up saying:"Failed to contact Key Server"

today still the KeyApprovationPending,i'll wait until 24h are gone

If its a good stealer it wont help to unblock the registry.

24h passed from a lot and still this error,i sent a ticket,don't know what to do else.

cannot just try to format the pc ?

i'll wait until tomorrow,if the problem with steam won't disappear i'll try to format the computer

I would recommend you restore you computer to a point before you ran the keystealer , this will 100% work just click on a the home button and search restore (in your language ofc)

Guys,it worked!thanks a lot i restored it and now i can play again DayZ,i'll give all of u thanks and Rep!