Monster High : La Grande Barrière des frayeurs

I'm actually surprised so many people in the fandom dislike lagoona, I liked her up until this movie. Her personality is so annoying in this movie, they changed her hair texture and model but why? She looks so bad in this movie. Also why is Claudeen purple and why was she the only one who changed colors???? I had a big mermaid phase when I was younger so you'd think I'd like this movie but no, it's a total flop. Kinda seems like they slapped it together to sell the toys which I'm pretty sure would've sold just as well if not better without this movie.