Are you trying to add photos via wp-admin or through front dashboard? I am able via wp-admin, but I see what you are referring to when trying through https://wordpress.com/post/. Are you just getting a blank white page when trying to add media?
I’m just trying to post a normal post. When I try to add photos to the post using the normal ‘media’ function, I’m getting blocked for some reason. I can see past library photos I posted in very large size and I seem to be unable to add any new photos. My blog is called HX Remore at michealdebarra.com
Feel free to log onto my blog and trey to add photos as a trial. Thanks