I have bought a Turbo Mesh drum set for my 6yo son two weeks ago. Everything was going well and he loves to play every day until my 4yo daughter and friends came to "play" with it. Now all the sounds and settings that my son used to play are not appearing in the module, even worst; the three toms have the same sound as well as the two cimbals. I'm not able to find any help online. Please help me!