My domain is: https://www.aulasprofdanilo.com.br/moodle/
My web server is: Apache2
The operating system my web server runs on is: Ubuntu Server 18.04 LTS
When I access my web page by any different web browsers it returns that it is not secure. I have already checked my certificate and it’s okay. My SSL test can be viewed in: https://www.ssllabs.com/ssltest/analyze.html?d=www.aulasprofdanilo.com.br.
Please, what is the problem with my certificate?