Hello @afrolord ,
The Gizmo display issue is a known cosmetic issue. Simply disable Move mode to remove the Gizmo from your view.
In regard to your image not displaying, this could be the result of the model being oriented at an angle for which the image is not assigned. For instance if you assign an image in the “Left-Right” menu and “Project on Mesh” is set to max, that image will be viewable on the mesh when it is locked to the left-right view in the viewport, and begin to disappear from the mesh the farther you rotate the mesh away from that angle. Rotate it more than a little, and the image will disappear completely.
If the above does not explain your issue, please contact ZBrush Support. Technical support for ZBrush can’t be provided over the public forums, and other users wont be able to help you with system specific problems. All technical issues and concerns with your ZBrush installation should be directed to support.