Dear users!
Only DCS World keys purchased from these locations are valid purchases and can be activated in the Module Manager:
Any DCS World keys purchased from other sources are invalid and are simply trying to re-sell keys that are bound to other users or purchased through fraud. Such sites include Kinguin, CDExpress and G2A.
If you purchase DCS World keys from these sites, we cannot help you. We suggest you contact these sites for a refund.