Why does my bunny poop everywhere except its litterbox?

Its an indoor bunny. She has a cage. I tried moving the litter box around to the corner she poops in. Now she just poops in the middle of the cage but the litterbox is made for a corner. what should i do? I tried moving her poop to the box she just doesnt get it. Also when i let her roam my room she only poops in my bed..?