Enter the email address in the appropriate field in the login screen. This action should activate buttons in the bottom of the screen. Click on "Create a new account" button, and when the email address you have entered is not in use by anyone, and then a 6-digit code should be sent to the email address. Retrieve it and enter in the next screen. Once successful, You should see Profile Creation screen. Don't skip fields with red borders. They are required while ones with green borders are optional. Once all the required fields are not empty, "Create" menu option would be highlighted. Click it to complete the process.

You will need to log in first and click on "App Settings" menu. Proceed to the bottom of the screen. Look for Long-press button. Keep it pressed until progress bar underneath has reached full. Let it go. Check your email address and retrieve 6-digit. Once successful, you will land in a new screen. Click "Remove Account" button. Click "Yes" in the popup dialog. Be aware that once your account has been removed, it cannot be recovered. You will have to create a new account in order to use Rue55.