Yeah, I think it due to Sync system between Portal and Facebook to game, as what I normally do which get the game working again, by doing this:
- Portal - Sign out then sign in again.
- Facebook - Removed the app then readd it again.
What I was told by TrainStation support team that it push my game to resync again once I done step above, so I only notice the change 2/3 days later. (I do this often with amount of players who don't play anymore or I keep seeing ZZZzzz too much).... sigh... it annoying but only part to get the game to work.
But thanks for let me know the update =D. Oh yeah, I updated my list of missing trains from Museum.