I had such a bad experience signing up for Uber a couple years ago I just use Lyft (where I can). My AF won't go up until next May so we'll see if I use the Uber benefit enough to keep the card.
My Uber experience was this: There was a (I guess) dormant account with my phone number (my number was fairly new then, less than 6 months old). They would not let me complete the sign up saying "phone number in use." Now the usual way around this is to call/text the number to prove I own it. Nope, took three weeks of back and forth with their support until they finally fixed it. By then the trip where I was going to use it had passed.
For company supposedly based on their "amazing technology" it was a big fail.