Hi,
ok, I looked at your project and yes it's odd, sometimes nothing work.
- Your UI system needs a revamp, you should use the new UI system, and totally move away from using TextMesh, it's not performant and unoptimal.
If I remove all the UI elements, score, timer and simply play the game, then I can never fail it, so This is where you need to refactor, the whole UI, and I think the issue is to do with using TextMesh.
Bye,
Jean