To contact Player Support from in-game:
1. Tap on your profile portrait in the top left corner of the screen
2. Then tap on the Support tab
3. Finally, tap on Contact Us
Note: If you have no past tickets then you will directly be taken to the "write a ticket" screen. But if you have old tickets you’ll be taken to "My Tickets" overview. From there you’ll be able to check past tickets and submit new ones.