Ok, so first thing, I think many Godot web games aren't performing as well in fullscreen as in the smaller size, so...
When I played fullscreen:
The stop/start spinning felt too slow and hard to manage. Some mentos were impossible to catch in time (literally).
When I played the smol view:
The spinning seemed faster, as well as its start/stop. It still felt too difficult though.
In general, it could benefit from something like lives so it's not so punishing, and a bit more control over the start/stop (even in the small view), a faster response even if it looks less smooth.
Also, the cover looks so much like the Cut the Rope character it felt like the whole game would be a rip-off first... maybe change it a bit more (in-game it looks different enough).
Not bad overall, good for a first full game : )