The actual site link is buried at the very bottom of the long post, so here it is, in case you are looking to see just the site (like I was)
I had the same exact problem this site solves. Built a website for my Boxing Trainer (for free) with content placeholder and a landing page video. He never gave me the content like Services, Testimonials, Certifications etc... for months at end, despite a lot of pestering from my end and despite servicing a lot of happy clients who were only too glad to provide testimonials.
Then he TXT-ed me one day and said that a Gym that was looking to hire him told him that his website looks "empty" and he was mad at me.