Expired certificate message on accessing modem gateway
I am trying to access my modem gateway by typing "10.1.10.1" into my browser (both Firefox and MS Edge). I am receiving an "unsecured connection" message because of an expired certificate. The date and time on my computer(s) is (are) correct. Doesn't Comcast need to supply me with a new certificate? Are there other safe options I can use myself? (Please don't suggest adding an exception to my browser, thanks).
Here are the details of the error:
"Your connection is not secure. The owner of 10.1.10.1 has configred their website improperly. To protect your information from being stolen, Firefox has not connected to this website. . . . " and
"10.1.10.1 uses an invalid security certificate. The certificate is only valid with the following names: webui-xb3-cpe-svr.xcal.tv, www.webui-xb3-cpe-srvr.xcal.tv. The certificate expired on Saturday, March 07, 2020, 5:59 PM. The current time is Tuesday, May 05, 2020, 3:28 PM. Error code: SSL_EFFOR_BAD_CERT_DOMAIN"
Suggestions welcome. Comcast - a fix from your end would be ideal. Thank you.