Please explain the problem in detail. What happens? What is/are the exact error message(s) ?

Please provide a public link (no password) that we can check out. No Personal Information Please !

Thank you, Fred. Here are the messages I receive.

In the search bar, I entered https://mychartmetrohealth.net I clicked on the link MyChart - LoginPage I got the login page (yellow and blue) but no request for my user name and password.

In the bar above, I first clicked on the shield&backslash, and got this message: Enhanced Tracking Protection is OFF for this site Site fixed? Send Report No trackers known to Firefox were detected on this page. Protection Settings: Standard Report a broken site: URL https//mychartmetrohealth.net/mychart/authentication/Login

When I clicked on the icon of blocked site, I got this message: Site information for myhchart.metrohealth.net connection secure connection verified by a certificate issuer that is not recognized by Mozilla

I made certain that my Firefox was updated to 80.1

I'm hoping that you see something in the messages that will help you discover my error or an error in the website.

Thank you for any help you can give me.

I made certain that my Firefox was updated to 80.1

Your System Details shows you are using Version 89.0.1, first offered to Release channel users on June 17, 2021

I tried https://mychartmetrohealth.net/ and got:

Your connection is not secure

The owner of mychartmetrohealth.net has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

mychartmetrohealth.net uses an invalid security certificate. The certificate is only valid for the following names: *.parkingcrew.net, parkingcrew.net Error code: SSL_ERROR_BAD_CERT_DOMAIN +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

• MOZILLA_PKIX_ERROR_MITM_DETECTED
• uses an invalid security certificate SSL_ERROR_BAD_CERT_DOMAIN
• configured their website improperly

How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER