Your registered email address can only be changed from within the official app. Please download the app from your device's app marketplace and follow the steps below to change it.
1. Tap Profile on the bottom menu bar.
2. Tap the gear icon on the top right.
3. Tap Settings > "Email address".
4. A verification email will be sent to your currently registered email address.
5. Tap the URL in the email, and enter your new email address.
6. A verification email will be sent to your new email address.
7. Tap the URL in the second verification email to login. Your new email registration is complete!