My key to ARMA 2 OA was locked and do not know what to do!

[My key to ARMA 2 OA was locked and do not know what to do!]

Bad CD Key / CD Key disabled / No CD key / CD key in use

Thanks, you can close the topic : )

[My key to ARMA 2 OA was locked and do not know what to do!]

Good Afternoon,

Today after about a month I went to update my game to play with my friends, but when I try to join a server the following message appears "Bad CD Key Your CD Key is disabled. Contact customer service."

What do I retrieve it?

thank you