Continuity mistake: When Phoebe is left alone at the couch, her mom comes up to talk to her. Before her mom shows up, there is a water bottle in front of Phoebe. After Phoebe's mom sits down next to her, the water bottle moves to the other side of the table without anyone touching it.
Audio problem: After Cherry states "phone number," as in deleting Phoebe's phone number while in a fight, Phoebe repeats it, in a more disappointed tone. But as she taps her finger on the delete button, the beep does not match up with when her finger taps the button.
Continuity mistake: When Max and his band are at Splat Burger in the beginning, the table that the band is sitting at changes. When Max introduces the band to Wolfgang, they are sitting at a booth near the door. When Max gets up to play his song, they are sitting at a booth in the middle of the restaurant. When Max is covered in tomatoes, the band is at the booth by the door again.
Other mistake: Throughout this episode, Max is captured by villains and is about to be bitten by a vat of hermit crabs. It's pretty obvious that between every scene of Max, instead of the platform lowering, it's just getting higher. Clearly, Max should've got to the hermit crabs about halfway through the episode.