The strongest aspect about Club de Cuervos is their leading characters, Isabella and Chava Iglesias are messy but likeable, you comprehend the reason why they do the things they do, and even if they messed it up, they however try to arrange things or do something good in their perspectives.
La Balada de Hugo Sanchez included a little bit weaker lead character but at least the cast were more extent so they compensate this with the more sympathetic characters and their dynamics.
But Yo, Potro, doesn't have any of this. His leading character is a good comic relief and a charming in the context within Club de Cuervos. Outside the original show and in his own movie, Potro is just a terrible person who mess things up and it doesn't care about anything except for himself. The story is boring, the fact that is a Mockumentary makes it worse and the rest of the cast is so forgettable that basically you forget their names after you watch the movie.
The moral of this movie is... Not because you character is beloved in your show it means he will be a good protagonist for a movie.