Recently one of my facebook paged got disabled, which I have no idea what happened and it has been running a few years and all the contents are original.
I was thinking this is just some random mistake by facebook, but then I heard that 2 of my photographer friends got the same issue too. Is there anything facebook updated and restricted photographers account?
Try adding watermarks to your images and see if the newer posts will be taken down. Have you also tried using image searches in Google to see if anybody else uses your images and uploads it as his?
There’s a possibility. I haven’t experienced such restrictions though. What I only experienced so far are music copyright restrictions so that’s how I had the idea that FB might have thought you are not the rightful owner if the images did not have watermarks.