today I renewed the certificate of my domain.
Everything worked fine. The certificate is valid until 27.04.2021
But if I click on the lock icoon in the URL on Firefox it says: 'connection is not secure'.
My domain is: https://ingo-preuss.de/
I ran this command:
sudo certbot --apache
It produced this output:
Added an HTTP->HTTPS rewrite in addition to other RewriteRules; you may wish to check for overall consistency.
My web server is (include version):
Server version: Apache/2.4.46 (Ubuntu)
The operating system my web server runs on is (include version):
Ubuntu 16.04.7 LTS