One reason that I didn't like the season was changing of the genre of the series, while season 1 was romantic, simple and cute in its own way, season 2 chose a very different direction.

The 1st season was amazing with a perfect ending and with a good scope of taking it ahead to another season.
Coming to the 2nd season, for whatever reason, the lead actor wasn't in the series (either the actor didn't want in or they fired him), the story was most definitely affected by it with a big plot hole trying to be covered up by placing a mystery over it and having the whole season seemed like it was made to solve it but ending still having it unsolved.
The reason given behind the character's disappearance didn't just add up and felt illogical.

Now coming to the story while ignoring the disappearance, the 2nd season seemed force even when there was a good scope for the story. Things just happened, just like that without a proper reason.
If we consider 2nd season as another story altogether maybe it would have perfectly or at least in a lot better way.