Thanks for playing. Really appreciate you uploading a video. To answer your question, Level 14 is definitely solvable. But maybe there is a difficulty spike there. I'll reconsider the level order to balance the difficulty.
I don't see the way of pressing two buttons while having only one crate. And it is not possible to use the ceiling through limiters and/or the crate self and player character self. Stuck on that for over 10 minutes, tired of trying, and left. Maybe I really missing something. Sorry.
That's understandable. If you're still interested in trying the rest of the game,
You can solve that level by pushing the block down and using the ceiling to activate both levels. It seems that could be a difficulty spike at this point of the game. I will rethink it.