Refreshing the page seems to have fixed my issue of not seeing all the challenge levels. I see dozens of levels I couldn't see before, in each category
I cleared 81 main levels, then found 13 challenge levels in "Medium", but I didn't see any others. Now I can't even find the 13 ones I already did in Medium. Anyone know what's happening?
 "Pixoji"){kind=icon}
 "Sort the Court!"){kind=icon}