2 biggest problems
First, half of the puzzles require you to guess or use a hint because some pixels have multiple possibilities. Stage 433 is entirely like this. I only have 4 hints max and I keep having to reset because every individual pixel has a 1 in 10 chance its correct.
Second, your daily reward breaks after day 28. The calendar resets starting on day 29. I already collected day 28 reward hence the reset. However, it won’t let me continue because it thinks day 29 is locked.
If you ever make more puzzles like these, I suggest you make it hard, but not with multiple possibilities at the end.