Thanks for playing and:
1. The game was suppose to have two endings but unfortunatly i didn't have time to add them.
2. I noticed that some players had the same idea, that matching openings in the walls on the sides would "teleport" them to the other side, i will definitly fix that problem (by re-making levels and thinking while doing so)
3. The height issue seems to be caused by Web version. I already looked into that. unfortunatly i wasn't able to find the core issue, but i'm still trying to find it and fix it. The desktop version (Windows) does not have that problem tho.
:D