Digital Certificate continually prompts to add a new Digital Certificate Identity

Windows 11 Home, Version 22H2

OS Build: 22621.1702

Acrobat Reader version 2023.001.20174

I have been using a digital certificate issued by the Spanish authorities to sign documents in Reader for years. I recently had to update the certificate (not the first update), but after this most recent update I can no longer sign documents. When I do, I get the same prompt:

"This signature field requires a digital signature identity. Would you like to configure one now?"

I follow the onscreen process to create a digital id from a file. However, when I try to sign, the same prompt appears. It does not matter how many times I try. I restart and the issue persists.

When I check in Preferences/Identities&Trusted Certificates/More/ I can see the digital ID I have just created, in addition to the Windows Certificate Store. I have logged in, and the issue still persists.

I tried resetting Preferences to default, issue still persists.
This issue affects all PDF files I have tried to sign, including older PDFs which I had previously signed with older certificates. 

I repaired the installation of Adobe and the issue still persists.

I do not know what else to do try or do. Any help would be GREATLY appreciated.

John