Hey! Thank you for playing our game!
1. You are right: 'Tray again? No' is a feature and a kind of paradox. We are used to thinking of it as an issue. But the question doesn't mean this directly. In this case, we have to choose 'No' to complete the game. Not to try the previous steps again.
2. On the next screen, the picture with the time 22:22 is the key. You have to change the time to complete the exact puzzle.
3. Note that there are at least two more non-obvious things. I've just added a help/tutorial to our repository: https://github.com/ThePotat0/PARAdotDOCX/blob/main/HELP.md (To avoid giving too many direct hints right here ;))
I'll also add this link to the description page.
4. And yes, I think games like this SHOULD have hints built into the game itself. But we didn't have enough time for this. Sorry (^.^)