Random shutdown

[user-removed]

Ever since I signed up for premium service on my iPhone 5s, and began making a playlist, the App will play 4,5,6 songs, and then randomly shut down. Sometimes midsong. Very frustrating. No help to be found on App. Makes me wonder why I'm paying for premium service... plenty of Apps out there, and adds aren't THAT annoying. Not as annoying as having to constantly stop what I'm doing and restart an App...

[Soenarto]

I'm having the same random shutdown now on my android after I tried free premium. While it was never happened on free mode with adds.
I better stay free than paying with this problem...