What should I do if I haven't heard from my sitter in over 24 hours?

I have a pet sitter doing daily visits with my cat while I'm out of town.

The visits are supposed to be every morning, and I asked to receive photos of my cat each day. I've worked with this sitter before.

The last couple of days I've had to reach out to the sitter in the afternoon/evening, and right now it's been over 24 hours since I have heard from her. I reached out via text and tried calling her Rover number, but no response.

Is this okay by Rover standards? What should I do in this situation?