Dear Community,
My Workstation has been wiped and reinstalled. Previously, I was always able to update ArcGIS Pro to newer versions after changing the relevant registry entry from 0 to 1.
However now I am now stuck with version 2.6.2. and ArcGIS keep telling me that this version is the current one.

I couldn't find a way to force the update, since I try to avoid reinstalling the whole program again. I would need to get back up to version 2.8 to work on my projects.
Any ideas what could prevent ArcGIS Pro from updating?
Many thanks in advance.