How to change my profile picture in the game?

Your avatar is downloaded from Google or Facebook account. You need to change it on the account where you are logged, and then it should refresh and appear in the game.

Go to the “My profile” section, tap on the icon in the upper right corner and go to “Settings”. Tap on the “Log in” option, and then log into the Facebook account. After this step, a profile picture from Facebook should appear in your account.