UNRELIABLE/UNINSTALLED! Uber has no in-app help like other apps have & App has BUGS! Won't accept valid card info for stored payment method. The error msg doesn't clarify why. If you exit screen there's no way back in. There's no way to get back into "choose payment method" to try a different method. While putting in payment method it asks for a pin which it says is sent to your phone by text. But as you wait for the pin to arrive, the app auto fills it & moves on. Disaster!