Thanks for all the feedback! The reason nothing happens when you reach the flag is because it only counts if the very first version reaches it hence the name First try! because you reach the goal before ever time traveling while your future versions of yourself help you reach the flag. (because the version of you who has to win can never time travel, don't know if that makes any sense but I thought It would be a unique spin.) so only the dark blue square can trigger winning the level (Hint: you have to figure out how to jump off future's squares that do not exist in the first timeline.) I tried to indicating this in the description, but apparently that was kept separate from the gamejam page.
another thing to note is the flag will only register you as reaching it. If the bottom is contained within the dark blue square. if you touch the top or middle part it wont work. As well I wish I had done a better job with the credit screen because, it cause's the application to just hang until it's done. there are quite a few things I probably could have done better, and I hope my next game to be more straightforward.
I used Pyinstaller to convert it to exe before uploading, I thought that would allow it to be played on any pc but I guess I did not package the dependencies correctly or something.