Why can’t I access a website via COX WiFi while I can access it via my 5G mobile phone?

Hello COX Community, for the past month or so I cannot access certain websited from my COX WiFY laptop which I had no problem in using before: USCIS, CHEWY, AMAZON, are just a few. The error I received on my laotop is the same: "Access Denied-You don't have permission to access "http://www.uscis.gov/" on this server. Reference #18.3c2d2d17.1694788050.efbcf66"

I can access these website on my Motorola 5G cell phone using the same browswer CHROME. CHATTING WITH A LIVE COX AGENT DID NOT HELP.

You can email me at ******. Thank you. 

*Edited by Moderator to remove email address for privacy.