You can change your nickname by:
1. Purchasing the VIP membership by clicking the crown icon located at the right corner of the screen in the Discover tab.
2. Next, go to your profile, click your nickname, enter a nickname and click 'Change nickname'.
You can change your nickname numerous times by purchasing the VIP membership, but unsubscribing from the membership will change your nickname to what it was originally.
Please be advised, inappropriate nicknames will be rejected.