`--tls-max-v1.2` does what it sounds like and sets the maximum version to 1.2. You want `--tls-min-v1.2`. (Also, this just controls the default minimum version

`--tls-max-v1.2` does what it sounds like and sets the maximum version to 1.2. You want `--tls-min-v1.2`. (Also, this just controls the default minimum version when code doesn’t specify one explicitly, and the default minimum is already TLS 1.2 on the latest Node.)