Metal Box ! Hard Logic Puzzle

TLDR; get the game if you like a variety of puzzles, but don't buy anything in game bc the purchases are broke The puzzles range from good to bad, and vary wildly in between. You'll blow through like 2-3 puzzles and then blam, hard puzzle out of nowhere. Maybe that's just me, but I still enjoyed the game. I'm near the end now, and the only problem is I'm stuck on a puzzle (Level 93) and there's no guides online, the Extra Puzzle Pieces you use for hints are broken, so I'm just at a standstill.

Is it just me, or do your puzzle pieces for hints reset to 5 every time you open the app, even though you had hundreds when you closed it? Better to only watch ads the moment you need a hint then. The bouncing dialogue box is also annoying. Most of the puzzles are quite good, genuinely tricky. However, those two complaints cheapen the game for me. Decided to give 4 instead of 3 stars because I did really enjoy most of the levels (only one or two were ridiculous, no logic behind them).

You have to buy the game if you don't know how to solve a puzzle. Some levels definitely need some hints. There is no other way to get one without payment. There is a button to get hints with ad but that doesn't work and is useless. There is no reliable walkthroughs either. If you wanted people to pay for your game, man up and put it directly on the play store page and in a convoluted way like this