To change your RedHotPie username, on the App, visit Menu > Settings > Account Settings > Username > Type your new username. If the username is available then you will be able to Update.
On the website, click on your username at the top-right account management area to bring down the main management panel. Click on Account & Profile > Account Settings > Username.
Please note that your new username will need to be approved by our moderation team before it changes. Usernames that are deemed inappropriate or in breach of our Terms of Use by our moderation team will be rejected.