Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello,

I am a 36 Tauren Warrior playing on PvP serv for about 1 month.
Here's my issue :

- I can't swim. If I go into water, nothing changes : it's just like on earth.
- If I don't active my horde sign, my group members can't target me, and so, being a tank, I can't be healed.
- I can't attack non agressive mobs.
- Maybe other bugs I didn't see ?

Can you help ?

Thanks for reading