This option is unavailable in the game. But our Player Support Team will be happy to help you with this.
1. From the game:
- Tap the Profile picture
- Go to the Connection tab
- Tap the Support button
2. Via the webform: https://plrm.me/arena_support
3. Via the email email@example.com
Make sure to indicate your ID. It's under your nickname in the player profile.
Also, you can log out of your current account and log in to another one or start a new game without disconnection: