Had the chance to test it again😉
Loaded the plane with real time and current date = the screens won't work, changed the date to 22nd December, the screens didn't work either.
Went to main menue and selected 22nd December = the screens worked back normal, changed the date to current date, the screens still worked.
So it seems realy as a work around tho load the plane with a date prior to 24th December. After the plane loaded, you can change the date to the current date.
Kind Regards
Patrick