Tank not rotating what do I do?

When i watch videos of people showing their tanks, I download them and add them to my test server.
Once I have added them, I spawn them in and they wont rotate but still can shoot.
Some others can’t rotate or shoot.
What do I do?
^^
This is not only for tanks this happends to Jets & Helicopters where I can’t shoot with them.

Might have some kind of mouse steering feature on ? have a look through your settings