I just had a thought. If you still have the iPhone 7 you could try backing up both phones following the instructions HERE Then restore from the 7 to the X again. You would lose anything you've added to the X since and may want to revert, but it may be worth trying. If you back up the X you can always revert. Level progress…
In that case it would indicate that, as @Sukanta_Biswas says, you have somehow been removed from the group of players who get this bonus for now. I'm wondering if the episode trophies may be stored on the device, along with the boosters, in which case they will not have transferred, but why it is not giving you new episode…