MCPE won't open

After downloading Minecraft pocket edition from my friend's Apple ID to my iPad, it worked successfully. I then changed to my Apple ID. It still worked successfully.
After my iPad turned off because it was 0%, I charged it.
When it was charged, I was excited to play Minecraft and build a city, but, unfortunately, the game is not even launching.
I'm pressing the Minecraft icon on my screen but nothing is happening.
I would really be happy if someone helped me resolving this.
I'm not able to take a screenshot because there's nothing I can capture, just my home screen
Note that I'm using iOS 10 beta 1, it's a pre version.