I got stuck on level 9, so I was surprised when it put me on level 10 cause I got stuck on it for too long
Or did you mean because level 10 is a lot easier? If it's because it was much easier than level 9, it's because I was just introducing a new mechanism, the portal. There will be much more challenging levels to come.
But, if what you were saying, was that the game put you on level 10 because you took too long, then this will need addressing.
Thanks for your feedback. It's much appreciated.