Intuit Data Protect not sending success or failure emails

Win 11 Home 25H2; QB Desktop [Premier Plus Nonprofit Edition 2024 
Release R21P (64-bit)]


A couple of months ago IDP stopped sending success or failure emails. It 
had been working fine before that, but I did have a similar problem a 
couple of years ago that QB support (or I) was somehow able to fix. This 
time support could find no issues and said it should be working. It does 
not.

I've validated that the email address I'm using is correct and there's 
no messages in my SPAM folders.

Within "About Intuit Data Protect", "Ctrl + F2" does not open the 
"Intuit Data Protect Diagnostics Tool" as it's should.

Also within "About Intuit Data Protect" clicking "Update" produces no 
dialog or window. Nothing happens.

Firewall? I don't see the "IntuitDataProtect" folder within "C:\Progran 
Files (x86)\Common Files\Intuit", nor within "...\Common 
Files\Intuit\QuickBooks".

I'm thinking my next step is to request QB Support to use their remote 
desktop ability to visually check my setup and configuration, but I 
thought I'd try asking about the issue here.

I attempted to post in the QuickBooks Community, but couldn't get past 
sign-in or login or "Ask the Community".

Advice welcome.

Thanks,
Pete