There seems to be no official issue yet, but having played this level I thought I'd add my two cents.
- is the entrance message necessary? could you get rid of the entrance room altogether and start at the text screen instead?
- the purple coin room has more coins than you need to collect, but nothing ever hints at that. (maybe this isn't an issue any more because the coin counter works now and lets you see your progress.)
- "points" sounds like a positive thing, but is actually something you want to avoid. perhaps rename it? ("penalty" or something?)
- maybe reword the texts screens to better convey information?
- maybe make improve the horizontal scroll situation in the text room?
- in the math room, maybe make it easier to tell which block you're standing under?