Bluebeam: Missing Menu Bar or Toolbar

Missing Menu Bar
If the top bar in Bluebeam Revu is missing, you can try pressing F9 to toggle the menu bar, or go to View > Toolbars and select the desired toolbar to show or hide it. 

Navigation Menu
To turn the Navigation Menu on, use the F4 function key.

Status Bar
To show the status bar, go to Tools > Toolbars > Status Bar, or press F8.

Toolbars
To show or hide toolbars, go to View > Toolbars and select the desired toolbar. Checked toolbars will appear in the interface, and unchecked toolbars will be hidden. You can also right-click on any displaying toolbar to show or hide it. 

Note for Laptops:
If you have a laptop or a keyboard without a number pad, you may need to hold down Fn then press F9.