What's needed to have a boarder/sitter removed Rover.com?

My dog was viciously attacked by a pitfall my boarder/sitter was caring for. My dog had to undergo surgery. She would not claim responsibility for the attack. The county(court & animal control) found her liable. The County does not have her listed as a registered boarder. County and state laws state anyone boarding animals must be registered with the state. (This means home inspection – to show resident's home passes inspection to board).

If one finds out a boarder/sitter does not meet the requirements of the State and http://Rover.com, what needs to be done to have them removed from http://Rover.com ?