Hey! I managed to get the game to work by downloading the .RAR file, extracting the contents, recompressing it into a .ZIP file, then uploading it as a private itch.io html game. For some reason, itch.io only likes .ZIP files, so a .RAR file won't work. I recommend you do this so that more people can play the game—check out my screenshots for the itch.io settings.
Here's my review for the game. I like the idea of having to fly through the level and avoid obstacles, kind of like Flappy Bird. I feel like more levels could've been added, but I understand that game jams don't give you much time. Also, there should be checkpoints since I found it a little frustrating to restart from the very beginning every time I died.
That said, with some more polishing I feel like this game can be solid. I also liked the visuals, with how everything looks like it was sketched on paper :)