If you are using an Android device, you can download the app by searching for "Uber driver" in the Google Play store. If you are having an issue downloading the Uber driver app on your Android device and your device displays an error like "unable to get secure connection to server", try closing your browser app by tapping your device's menu button and swiping right on the browser app.
You can also clear your browser cache. To do this, tap the menu option within the browser (typically this is an icon of 3 squares in the upper right corner) then head to Settings > Privacy & Security and tapping "Clear Cache". Please note this will delete any saved passwords and browsing data.
If you are still having trouble downloading the app, please let us know here.