nate_sf

I'd suggest telling him "this isn't working for me" and tell him he needs to leave.
At that point, he'll either ask what he can do to correct things, or he'll pick up his stuff to leave. In order to avoid a confrontation you may still want to pay the full fee, just to get him to leave with minimal drama. That's the old adage with escorts, you're not paying them to show up, you're paying them to leave. But no tip, and you could also leave a less-than-stellar review.
Some other options could include not having porn playing (so he's focused on you, not the porn), and/or communicating to him what you would like to do together or had hoped to do together. Particularly if he's a younger provider, he may need to be given some direction.
You're right, a true professional should not be dissuaded by your age or body type. For a lot of us, those things are not an issue, and instead we're more interested in the chemistry and good energy. Some guys will put in their ad descriptions that they're open to all ages and body types... pick one of those guys!

As others have mentioned, it's mostly the provider's decision. The exceptions is where Rentmen's filters move an explicit pic to the private gallery.
People will have different reasons for deciding what to put in the public gallery vs. premium or private galleries. Some will just put everything in the public gallery and not bother with the other galleries. Others might only show their face in their private gallery, or only their explicit photos there. For me, the photos I had in my public gallery were the ones I was OK having random people come across and browse, and I'd use the private gallery for the more explicit photos that I wanted someone to have at least a basic RM account to see. I'd provide access to pretty much anyone who wanted it, and it gave me a chance to say hello and thanks at the same time.
The premium gallery feature was added a few years back, and I never really understood what the point was since there's also a private gallery. I think as suggested this was probably a pitch to help get more subscribers to pony up for premium. Over the years I haven't noticed much difference in whether someone with a basic account or premium account would end up booking.
Right now I'm on hiatus so I only have one photo in my public gallery. I put all the rest in private, and people who had already been given access can still see those even though I let my profile expire. As shown in the screenshot below, providers are also required to have a "G-Rated Main Photo." RM says that's for areas where there are restrictions on what can be shown in the basic profile photo. The screenshot also shows RM's rules for photos.
 

I use Tunnel Bear for my VPN, works well. I use VPN if I need to modify my rates, and if I want to read the text of the reviews. In order to modify my rates I have to also set my location on RM to somewhere outside of the US, so I pick somewhere in Europe. So if all else fails, try changing your base RM location to somewhere outside of the US and see if that does the trick. 

As a provider, I never ask for or solicit reviews, and my numbers are in that same range. My RM profile has been active since December 2015 and I've received a total of 15 reviews, which works out to about 1.8 reviews per year. I greatly value these reviews, but they've come on their own, and I appreciate it when clients want to share their experience with others. However my business model does not rely on them.
That begs the question, would I have more business if I solicited reviews? I can't answer that. But at least from the perspective of a provider who does not solicit or rely on reviews, the changes to RM's policies don't appear to have had any impacts on my business.
My sense for new guys would be that their newness would overcome any issues with having few if any reviews. Presumably they'll attract clients who don't care about reviews. But I'm just guessing.