Thank you both for your help. Unfortunately none of it helped, but perhaps it will provide some clues.
I'm on the same version 20630, no updates available.
Disabling new Acrobat didn't make it appear on the Home screen. (see screenshot)
Deleteing the preferences folder didn't work, but a clue here could be that a) that folder was empty and b) it didn't recreate it
Deleting the DC registry folder also didn't help and again it didn't recreate that folder. And given how much was in that folder, that seems odd. I even tried changing a couple of preferences and neither changed.
Hi there,
Hope you are doing well and sorry to hear that the issue still exists. Please try to remove the application using the Acrobat cleaner tool https://adobe.ly/47KIsBo, reboot the computer and reinstall the application using the direct link https://adobe.ly/3UI5iCa and see if that helps.
Let us know how it goes.
~Amal