Thanks, this information helps a lot. Since the same problem happens both on the website version and the installed version, it looks like a touch-input compatibility issue rather than a performance or installation problem.
I’m going to adjust the mobile input system so the game listens for native touchscreen input directly instead of depending on touch being converted into mouse clicks.
We will fix and ship small update of the game through our patreon since itch might deindex us if we constantly push updates.