My reviews, as you'll come to know are about sites that I find have egregious administrators who steal from sites that I and many others work hard to produce and upload free-to-download content for sites like pixabay.com
www.maxpixel.net is another "scraper" site that take the vast majority of content from websites like Pixabay, Pexels and Unsplash and demand attribution in order to command notoriety from stolen resources.
Stay away from them like the plague.