WotLK Instance maps --- Please help!

tl;dr: Instance maps won't show up inside the instances, looking for a way to fix that.

Hello!
I recently started play on the Icecrown.

My issue is;
When playing on Icecrown, the instance maps won't show up when I am in one, nor will mini-dungeon maps such as mines or caves- which I am pretty sure have their own mini-maps.

I have tried reinstalling the WoTK expansion, but that solution failed.
I'm not really a master of files and such, so I don't really know how to fix this.

I would really appreciate if someone could help me solve this issue!

There are no maps for caves and classic/TBC instances in wotlk. Only wotlk instances have maps. Maps for caves and older instances were added at some point during Cata or MoP. If you want instance maps, you can use addons, for example, Atlas. But it won't show up as the regular map (instance maps have to be opened through the addon) and won't show your location on map.

Oh ok!

Thanks!