Updated it.

Diamond armor in sw lobby

He replied. Its considered glitch abuse since I had a d sword.

@michael the only way to get Diamond stuff in the Skywars lobby is to do /shop. And /shop is illegal at spawn, that why he was banned.

Yes, it is.
Ever since from a few months ago when people were using /shop to buy the Black Hole, which could destroy spawn.
I think you should have a read of the rules or ask a moderator.