thanks great feedback...yes you are right need to iron lots of things. The challenges I thought I made them to easy it turns out not ..lesson learned. I had to disable lots of plugins to fit in the upload size , but I think what messed it up is the custom clothes that I had reimported from blender to unreal ...then whole bunch of skeleton errors popped which I thought its not a problem but it seems that messed up a lots of things hence the errors...i am trying to figure it out ..
ah and the piano what i did not try to set the collusion to work and couldn't ..but i had no choice but to leave it as had to complete all on time.