someone hacked my realm, messed with my textures and more

Some hacked textures that I do not own keep forcing them selves on to my realm and when I downloaded the realm for inspection I couldn't reupload the world back on to the realm, what's worse is that the back-ups didn't work and I couldn't close the realm. So I was hoping that you can help (my username is SirCreepington7 if that helps). 

 

(update, realm world is back up)