Hello, I have the same problem for several weeks without medium response, all very disappointed when you see what I bought, I briefly explained ....
I bought long ago DCS Black Shark 1 on CD-ROM with the problem of language where there was the Russian and not English, then I bought the site DCS Black Shark 2 Upgrade 1.2.4 but despite this he told me that my key is invalid and I have made the right versions anyway I've tried them all but my key is still valid, for several weeks I can play more and I want a helping hand forum
Thank you in advance