I just got a new laptop and it seems this game doesn't support Stream Cloud so I need to find the save and move it over but am not sure what the save file is.

I purchased 100 hints and the Precise Course Achievement unlocked in game, but not on Steam. I have validated my files, tried using hints, and waited a while to see if Steam would catch up. No luck, unfortunately.

Used all of my checking boosters and upon clicking "+" on boosters nothing happens. If it should work like in your other game, there should be option to buy more of them but there is not.

After level 104 I got achievement for 100k. I have 148k now. But it's wrong. It has to be about 100k less.

So, you continue making such addictive games. And I have suggestion about usability. I played some similar games and there was one very neat feature: numbers on the edge switched off when you fill same number of squares. If there were several identical numbers switched off only precisely defined. I.E. if there are three "2" and you fill some on the edge, it switches off, but if it is in the middle nothing happens....