Fun game but needs an update to fix bugs – Light Up Xmas Tree Review

My kids and I enjoy this app, however it has too many bugs. Lower right is extremely hard to touch. As others have mentioned level 15 does not work. This prevents from playing all the next levels. And way too many ads (which pop up and you end up accidentally clicking on them) for a paid app.
Review by Hplbiking on Light Up Xmas Tree.