I randomly got a prompt to allow CD to make changes to my security and now it’s working. Apologies to anyone who had similar issues. Below are steps I took that seemed to trigger it but can’t be sure if it is reproducible.
I did get CD to open as my default PDF file type software which when trying to view PDF opened. Then I copy and pasted a URL from Microsoft Edge into the Address bar of CD. That for whatever reason made the security screen pop-up. Now I can open CD from the Start menu.
Sorry about your browser if that’s your choice, BUT good. Now they might get their minds off internet browsers and focus CIS ??? I recommend going back to version 5.6 and making it fully compatible with Windows 10/11. When your lost start back in the beginning.