Wait so, were you able to get to the second level or not? Because if not you probably didn't spend all the 60 white cells.
Ahh, my bad! I didn't realize that was a requirement. I figured I was being efficient by beating the level with less than the allotted number of cells... I should try reading next time lol
Definitely not your fault. A lot of people had that problem. So that is definitely on me.