Hello. I have been fighting with this issue over and over. I fly P3D v5.4 and check the 12 FSDreamteam airports I have installed. Sometimes everything is good, but often I get the message that the trial period has started again. The addon manager entire folder and subfolders have been excluded from my Norton Antivirus scans. I have made no changed to scenery that I know of yet the trial period message keeps coming back. I Have redownloaded the installers for each, reinstalled each airport, reactivated each airport and still get the trial period messages. I am at a loss as to how this can be fixed. It's to the point that it is almost not worth having the FSDreamteam airports installed in P3D any more. What triggers these trial period messages to appear? Please help. I am so frustrated with this constant reinstalling of these airports (KMEM, KDFW, KLAS, KLAX, KIAH, KSDF, KCLT, PHNL, PHLI, PHTO, PHKO, PHOG).