Hello guys. Ive started having this problem with the 777-300ER where it has started asking me to reactivate my product. After several tries the produck wont activate and i cant fly it. The problem says ive tried to activate to many times and that the key is invalid. Ive tried another activation key sent from PMDG support but problem says key is invalid. I can fly the 300 Cargo planes but not the passenger 777-300ER. I seemed to notice this after i installed several liveries for that model.Every other PMDG product i own all work fine. Except the 777-300ER which did work fine apon orignal install but now the software wont activate the 777-300ER. Please help

I think a support ticket will be your best bet on any activation issues. My only suggestion would be to remove the license in the CDU, uninstall the 777 completely (base and expansion), then reinstall it and re-activate.