How do I fix a hand-top hover-copter?

I have one of those hand-top hover-copters that sense water and hover over your hand when hydrated. My friends' got confused with what and how sensitively to sense and just kept going up and flew away. Mine looks like there's something wrong with the propeller and keeps on leaning to one side. It maybe a weight problem because it's an astronaut with propellers. We think the reason is it reacts to any remote to turn it off and gets corrupted or we just drop it and wait for it to stop hopping and turns off. How do we fix something like that?

rickharris17 days ago

Can you point use at the product, I, for one, am not familiar with this item.