Where can I get Support? (User Guide, T&C, Application Version) Go to the cart screen. Open the Menu and tap on Settings. In the Settings screen, tap on Help. The Help Center button will take you to this central repository for all RPX/Reader related user guides and tutorials. The Terms & Conditions button will let you view the contractual language agreed to when first logging into the application. (Only visible for bill-to-merchant users.) The Application Version button will display the information about the application currently running on your device. For additional support, please refer to the Support Page in your merchant portal or contact your ISO contact.