You can change your nickname by purchasing the VIP membership.
To purchase the VIP membership, tap the crown icon located at the right corner of the screen in the *World tab*.
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 aware that nicknames below will be rejected:
*Nicknames promoting other services / products / personal social media channels
*Nicknames containing any personal information (contact info / address / bank account info etc)