I had a sitter this weekend and I had to text her to see if the pups were ok..basically just wanted to know if she was taking care of them.....
I am sorry your sitter didn't communicate well with you. I normally will send an update midway through the first day but not right when I arrive - I like to let things settle down a bit. Outside of that, I encourage my clients to message me anytime they want an update (we also discuss update frequency at meet and greets). What may seem like too frequent to one person may be just often enough to another. But I agree with Walt, a sitter should send a minimum of one update a day.
I hope that helps and best of luck!
Sitters should send pictures and an update at least once a day via text or the Rover App unless you request more frequent updates, sorry your sitter didn't communicate well with you