Continuity mistake: When Joy is packing up to leave for eastern Europe, she's talking to her mom and she has two trolls in her hand, and you can see that the troll with the blue hair is still on the stand. In the next shot, she has the troll with the blue hair in her hand.
Continuity mistake: In The Scene Where Joy is massaging the president. You see a close up of the presidents face with a cloth around it but when it changes to A different view of Joy massaging the president you should be able to see the cloth but you don't. It keep disappearing and reappearing.