The connection is not private error message indicates a problem with the certificate provided from the website. This warning message is displayed by design to help inform you about the potential security issues.
It is not recommended to proceed unless you are sure that the security of the website has not been compromised. If you are unsure, please do not bypass the security warning and contact the owner of the website.
To bypass the message, press on "Advanced" and then click on the "Proceed to {website name} (unsafe)"