I think you can't change the second player skin if you are playing split-screen.
Have the bees been name tagged? If not they have probably despawned .
That is the servers plugin, when you first join the server you have to register/sign up. (don't use your real password!)
The cat has to be sat with right click or whatever platform you play on. It has to be sat down for it to not follow you. Also, for it to not go outside you have to sit it inside.
That is because the fire wasn't broken by a player and it still acts as it's still there.