Thanks for playing!
The difficulty has been an issue for almost everyone, i'm going to improve the map's navigability before making more balance changes, adding more shortcuts and less annoying rooms.
I'm reluctant to change the jump, it's a core part of the game, everything is designed around it. The white block puzzle is supposed to be a place to learn how to control the jump better, the npc gives hints about this. But I understand that the text may not be entirely clear.