Is my sons crib safe?

an

He’s been sleeping in a pack n play and tomorrow he’s 9 months old so we brought the crib down for him to sleep in. Is the way it’s set up safe? Is he too tall for it and is the sheet okay? Also he got his arm caught in between one of the bars and twisted it and we thought he broke his arm... he’s fine but it makes me scared he’ll hurt himself and i know crib bumpers aren’t safe.