Unable to establish secure connection

Something has changed with your security certificates and my older mobile phone browsers can no longer access the community page(s). I can access cartalk.com fine. When I go to community page, it switches to secure page and then I get an error saying unable to establish secure connection. Worked fine for years and have not updated anything on the phones. Personally, I don’t really see why the forum needs to be secure anyway but why change it and essentially block users on older platforms? I will visit here a lot less if I can’t access using those older platforms…