How can I tell if, as a driver, I'm set up to receive text alerts for surge fares and that sort of thing? I think I turned the notifications off a long time ago, as I was receiving texts 3-4x a day about financing a car, refer more riders, etc. etc. and haven't gotten anything from Uber since, so I must have turned off this feature. How can I turn it back on so that I'll get notified when drivers are needed on the road?