So many problems

I have so many problems with this app. It used to work great but as of today: I cant open certain songs, the guiding vocals stay on even when theyre not supposed to, theres some weird glitch with the notes. I dont know if its an update or what but youll get five stars when you sort all of these things out.

Gobbre about Sing Karaoke and Record Songs with StarMaker, v6.1.1