EDIS web hosting supports TLS 1.2 for encrypted HTTPS connections. You can use a server test to check the protocols and cipher suites offered by your particular website.
Historical note: EDIS discontinued TLS 1.0 support on its web servers on 1 July 2018. Very old browsers may therefore be unable to establish an HTTPS connection.
Use an up-to-date browser and keep your operating system updated.
The test rating depends on your website configuration. Contact EDIS support if you need help.