Question

How to change the profil piture of this aap ??

Answer 1

Changing profile picture i easy in this app. All you need to do is go to the (ME) section there you will find there is an edit button click it and then select the picture you want to keep. 

Answer 2

That's very simple.
1. Go to an icon on top right.
2. Now choose your fav photo.
3. Ur profile has changed :)