Hi hoovdaddy
It seems you have tried all the basic steps from the help documents, I would recommend you to Contact Customer Care for further assistance.
[Note: Make sure that you are signed in to the website with the valid Adobe ID under which the product is registered]
I contacted support via the Chat. Worked with Sakthivel. I was instructed to download what looked to be the trial installer. I downloaded and successfully installed the CC Desktop app and am now re-downloading the software I have installed. At this point, which it's still early in the game, I think I'm back to where I was attempting to get to last evening.
The file I downloaded from Sakthivel was called ACCCx3_6_0_248.dmg.
This one was sucessfully installed.
The one that continued to fail me was from the CC Desktop page, called CreativeCloudInstaller.dmg