gsx activation

[Aerlingus1]

.Hi I bought gsx for fsx and tried to activate but cant find how to do this.
i have tried the add on manager but it only seems to give me options for adding individual airports and not the full thing
 

[virtuali]

As explained on the GSX manual, open the Addon Manager menu, select Fsdreamteam, select GSX, then click the "Register Serial" button, and insert your Serial Number.