I have found Four issues with Skyblock. -When you do /warp MobGrinder, it teleports you to the outside of /spawn. -When you throw all thing in /sale, you loose your items and don't receive any cash. -/warp MobGrinder itself doesn't spawn any mobs. -Whoever made the Mob Grinders doesn't know this but, Mooshrooms don't spawn on grass, they spawn on Mycelium. Thank you for reading, Hope this gets resolved asap.