Let’s Encrypt is the certificate issuer used by LMi. As of 9/30/2021, the root certificate Let’s Encrypt used for compatibility with older devices has expired. Users running older versions of macOS and Windows are likely to encounter a warning about an expired root certificate. To get around this issue, you’ll need to update your device’s operating system and/or web browser. If that is not possible, you’ll need to click though the error to access your website and/or email. On some web browsers, you may see something similar to an “Advanced” button and then a “Proceed” button or “Add security exception”. For Email clients, you may encounter a dialog box with the option to “Always Allow certificate,” in which case then click “OK” or “continue”.