Great concept but common errors – Mixably - Top Playlist Community Review

I think this app is a great concept and would like to continue using it but I keep running into a common error when trying to add music into a playlist from Spotify. I click on a song to listen to it and eventually add it into my playlist but the song doesn't load no matter how long I wait for it to play. Also, if the song doesn't load to play, the app doesn't allow me to add into my playlist. Cool concept but ran into a few troubles.
Review by Zamrock21 on Mixably - Top Playlist Community.