When using Chatavise, you have the option to request reviews from customers and clients across multiple platforms. While this may be the case, businesses are unable to ask for reviews through Yelp. That's because Yelp is looking for reviews from customers that choose to go out of their way to leave feedback about their experiences. It is possible that if you request others to leave reviews for your business on Yelp that they may remove the reviews from their site. Here's an article written by Yelp that goes into this more in-depth.