Hmm last level seems to be bugged. I solved it (all numbers are gray) but nothing happened. I looked at the walkthrough and it has a slightly different figure. I tried copying that but it doesn't exactly match the numbers so thats not it either. Kind of annoying after so much work. Otherwise great game.
The lolmarket isn't working properly yet. Don't buy gems atm and wait for Tukkun to fix it.
The current equilibrium for gem prices is their lowest selling point so it's impossible to make a profit atm.