Bad xfinity dns certificate and 404 error on specific site
I receive a certificate error: Low-xdns.xfinity.com expired august of 2019 when trying to connect to https://02b5896.netsolhost.com/fileman/fileman.cgi? clicking 'proceed to web site' fails with a 404 error. I contacted the hosting provider of the site and on other networks the site IS AVAILABLE.
I have tried the chat assistant, looking in forums, calling and I am about fed up with Xfinity. This has been going on for years. I literally haven't been able to update my page since 2016/2017.