Also, mind the minimum OS requirement for ZModeler 3.3.0 is Windows 8.1. No more updates will be made for ZModeler 3.2.1 on DirectX9 engine.
You can download and install this version into a different folder manually.
Since this version is incompatible with previous builds, it is unavailable via automatic updates. ZModeler 3 engine have been upgraded to DirectX 11.