ZBrushCentral

Geometry's resolution is gone!

I’m new to this software and have been looking around on some tutorials at youtube today.
But there’s 1 problem i’m having now. When i pressed CTRL+D first time, i could change that resolution on the geometry.

I also tried press on many buttons (because i learn me by that way too), so i pressed on these delete higher and delete lower (or whatever they’re called).

Now however, i can’t make my mech smooth anymore. It’s so blocky.

I tried to reinstall Zbrush, but still it doesn’t work when i press at CTRL D

How do i fix this back? I even tried the buttons crease and Decrease but nothing happends.

tool>geometry>SMT (smooth) check to make sure this is on.

I don’t find that SMT/Smooth… but i just discovered the problem.
I forgot to press the button “Make PolyMesh3D” :o
Now it’s working