Hi Adam I am using Protools Ultimate 2018.7 with 192 I/o legacy blue
when I open dolby renderer its window is not opening and preference is also grey please help me
This could be a 12.6 issue. The v2.53 installer you downloaded is exactly the same. Please try opening Mission Control (Control UpArrow) to see if this is somehow hidden.
Preferences is always greyed out with v2.53 as all options are in the application.
I'm not seeing what you are seeing with the other two images. With 2.53 running on OSX 10.12.3
In View I see: Show Tab Bar, Show Main Window, Enter Full Screen
In Window I see: Minimize, Zoom, Zoom All, Greyed-Show Previous Tab, Greyed-Show Next Tab, Greyed-Move Tab to New Window, Greyed - Merge All Windows, Bring All to Front, Dolby Atmos Renderer.
What OS are you running?