I tried to get Let's Encrypt certificates for both my www and non-www domain names, then redirect all the requests to https://www.afa-advisory.com/.
I installed certbot on my OVH VPS, then I tried many attempts to get both certificates:
1) I tried an all-in-one command: certbot --apache -d afa-advisory.com -d www.afa-advisory.com
2) I tried the domain names separately in two commands: certbot --apache -d afa-advisory.com certbot --apache -d www.afa-advisory.com
3) I tried expanding the first SSL certificate.
The problem is that I always get an invalid certificate for my root domain:
Invalid Common Name: Default Company Ltd