This site needs to be fixed.
Hello, I am a social media coordinator / Graphic designer. I have been tasked with fixing a site that the company’s owners paid way too much for the result and spent over two years back and forth with this company to get a semi-coherent site that needs more edits to get it looking professional. I don’t have a WordPress background Per se. I have been looking at tutorials and Skillshare to figure out how to edit the site and how they built it. I have built webpages on other places like square space and Weebly. I have a basic grasp of it but need help figuring out some features. We had an old site and provided all photos and detailed instructions on how we wanted the site to function and work. It still needs to be worked on, but they insist they have done everything by the book and are refusing to build the site to completion without additional funds ( they are milking this project, and I am over it)
This Site is for a [small cosmetic surgery]) facility, and our meat and potatoes are photos and social media content. The designer put placeholder photos for before and after sections on our main page, and I can’t figure out how to edit them. I know they are using plugins: AFC ( advanced custom Fields) and some other social media plugins that have never worked alongside jQuery Migrate, Smush, Before and After Plus.
Any advice you can give me on this matter would be very helpful.
[This is the before and after section. I have no idea how to edit this section, nor what these are called to look up how to edit them.])

I only marked NSFW due to the nature of the site in question.