The FF B777 checks the date against the in-sim date of X-Plane, not your computer clock date.
Even if you have the current cycle installed that is valid according to our current date, if you launch a flight in X-Plane and make it July in X-Plane, you’ll get an out of date warning, because in X-Plane it’s July but the AIRAC date is valid in December.
Either manually set the time in X-Plane to the current date, or just check the box to automatically sync X-Plane time to real world time.
@Phillip, Wow, thank you Phillip for your thoughts however,
Navigraph Richard already claims he found a bug, although not the plane in question ie 777. In addition, he made no suggestion regarding the date/time when I showed him a screenshot of my system time.
I did a clean install of X-Plane havent changed any time or date, but I see you are correct, it seems X-Plane pulls up some random date and time, however synching X-Plane to the system clock which gets its time from the internet makes no difference, its still out of date.
We can’t know more than 100 add-ons in such depth. This answer is highly disrespectful because we try to help where we can, and you see this here in the forum.
But this case topic also shows that you have a lack of knowledge here and you have to manage only one add-on.
Kind regards
Richard