[HH#101787] My SSL Cert is not installed in TLS 1.0/1.1

[HelioHost]

Username: overdueweevil2, Server: Johnny, Main domain: overdueweevil2.helioho.st

[OverdueWeevil2]

[Krydos]

Your SSL certificate is working fine. https://www.sslshopper.com/ssl-checker.html#hostname=overdueweevil2.helioho.st

Most likely the R11 Let's Encrypt root certificate is not in your ancient OS because R11 was created on March 11th 2024. I would recommend updating to a newer OS, or if you refuse to do that for some reason you could always import the R11 certificate into your ancient browser so it is trusted.