Hi there, i got a little tricky problem! I know i am newbie in those kind of thing, so please be gentle 
by the way, i followed the tutorial, but after i set the camera to be centered on the char, all the item that i put over the ground of the platform or floating over it, like coins etc, appear to be under or over their position (all the coins where under the ground) and those are also moving as the char is moving!
I hope that i’ve been enought clear! now i’ll show you
Thank you 
Maybe the coins are in another layer? If so, try to center the camera of the coins layer on the player too
Jeeez mate, thanks! it was such a simple issue, i wasn’t looking in the right corner!