Why does Norton VPN block Norton Safe Search Results

Tried to search with the Safe Search provided by Norton in my FireFox browser with Norton VPN ON in the US, got this web page instead:

Site at H T T P S : // “search” dot “nortonsafesearch” dot “com/” and “serp?annot=false&vendorConfigured=ask&o=APN12179&prt=SSS&ver=3.25.0.5&tpr=111&chn=1000&guid=bc0b7879-a2eb-4b67-aa0d-dfdf1d6d66c2&q=ROKU%20LiveTV%20Channel%20List&geo=en_US&ctype=&darkMode=false&sameTabLaunch=false&browser=FireFox&prod=HP&installSource=NAG&cmpgn=jun25&doi=2025-07-16&segment=nortonsafesearch01&subid=migration”

SERP = Search Error Page

Turned Norton VPN off and got the search. Turned it back on and the selected sites were browser Error 404 (not found) or a 500 (can’t reach) pages.

I turned VPN on/off several times with the same problems. I also can’t reach many shopping sites (Costco) with this VPN connected.

Can anyone explain this poor security behavior?