Is it possible to undo code coaches?

Answer 1

Why would you need to? I don't think there is a reset option for them, since you can attempt them as many times as needed. If mean the Pro ones throughout the course lessons, definitely not, if it was one of the free try ones. Once you've clicked on it you're stuck with that one, unless you go Pro.

Answer 2

Sumayyah Fahm

You can just reset your code.