To upgrade to become a driver in your Rides app, you will first need to navigate to your referral dashboard. On the home page of your Rides app go to the bottom left menu (see menu icon below), select Referral Program, click View Earnings. Log in to view your Referral Dashboard.
Scroll down and click the Become A Driver tab to start the process of becoming a driver.
To contact customer support, click the message bubble icon to the bottom right of your screen, then click New conversation type your message and hit send.