Keeps erasing my playlists

I use this for my teaching work and enjoy the Dropbox download feature a lot (I hate iTunes and cannot always access it). What stops me from giving this app five stars is that it keeps erasing the playlists. I have tried about five times to add the songs again and it erases them every time. This is a huge bug and needs to be fixed.

J-47 about Eddy Cloud Music Player & Streamer, v1.1