Coolaid apparently only reviews BP chicks who do 15 minute $50 sessions
However, that doesn't diminish the validity of his point regarding pics. I would suggest upgrading your showcase photos. Right now you have a collection that looks straight off your Facebook page with some dude half ass cropped out of some of them. The huge white box covering your face is overkill, just blur it out so at least people can make out your face shape and get a little hint. If you want to build your business you have to invest in your business, e.g. Get some good photos done.
They look sloppy and unappealing in addition to not showing off your body. It just looks like you put no time into it whatsoever, even poorly lit selfies in a bikini would be better than what you have in my opinion.
If your business is slow it may have less to do with places you're advertising and have more to do with pricing, marketing approach, menu,location, or service quality.
Just my opinion, and worth approximately what you paid for it