Unable to use my mount

Hi, I'm a lvl 32 mage and I can't use my mount any more. When I get on it, I'm immediately thrown off. If anyone has any ideas. Thanks

I have found that mounts dont work in some areas/places but i think this is a bug. As one example as a gnome you can't mount up in most of mage quarter in stormwind. if you try enough you can find some spots where it works but in most of it you can't. Best wishes!

Are you using a modded client, like the HD client? If so, don't.