There are some things that didn't make sense in the show:
Why Rose's team couldn't just use the same Vicky gave to them after Vicky sabotaged and stole it from them? And why wasn't Vicky seen getting into trouble for sabotaging Rose's team and having to start over and fail?
Professor Beauty calling Shawn her nephew when instead it should be grandnephew. Because if Shawn was Professor Beauty's nephew, he would be a lot older.
Kira being the daughter of the Snow Queen when it would most likely be the granddaughter of the Snow Queen
Vicky getting new armour, Kira's armour looks the same as the heroes' ones, and Cyrus's one looks the same as before. For Kira, her one looks similar to the heroes' ones and I don't know why. Cause for the heroes' armour, they were a special reward for them after they saved Regal Academy in season 1. There was the one with Shawn too. I mean I could probably guess he may possibly join Rose's team in the future, but to have that special armour so early may not be exactly right.
Is Prince Charming related to any of the fairy tale heroes? Cause normally the Prince Charming is referred to as the love interest of Cinderella.
Jack, the hen and Melvin being evil when Jack and the hen are good in the original story, and Melvin being the grandson of Merlin would make sense if both of them are good.
Shire Cat being evil when he is normally neutral
Sandra being the step-sister of Snow White when it should be being the step-niece of Snow White
How banished fairy tale villains managed to return to the fairy tale world
Red Riding Hood, the Little Mermaid and Alice not growing up and having any kids or grandkids
Bea (the granddaughter of the Pea Princess) being older than the fairy tale heroes
To be honest, I wish they could've improved all of this so that it would make a lot more sense.