Hey, looks like you've packaged your game incorrectly, I think you're using unreal so maybe give this article a read! https://docs.unrealengine.com/en-US/Engine/Basics/Projects/Packaging/index.html
Viewing post in 2010182 CyberPlatformer jam comments
Good work fixing it up! I can now say that I really like the concept! You're skirting the rules of one input a little but I think it's a perfectly reasonable interpretation of one button and a very creative way to implement a movement system.
That being said the movement could probably use some refinement, it's very quick and floaty making it easy to over jump the platforms.
Overall great job!