Could you translate that for me?
I am thinking it says you have navigated to a page using an unsecure connection. Can you click on << seedbox.bouillaudmartin.fr >>. to continue or add an exception for the self-signed certificate?
OK, I went to the page and I got the following:
This site can’t provide a secure connection
seedbox.bouillaudmartin.fr sent an invalid response.
Reloading the page
Learn more about this problem.
Make sure you have HSTS turned off on CloudFlare if you have enabled it for this domain... either that or CloudFlare is taking time to pass their shared certificate to all the edge nodes. Either way, this is a CloudFlare issue.
It is also possible that CloudFlare is reading a certificate for the self-signed that was used per IP and not domain. Typically, if you have CloudFlare SSL set to Full or Flexible, it will use any certificate and mark it as valid... using Full (Strict) however, does require a valid certificate from a trusted authority.
You can attempt to bypass this by installing Let's Encrypt and generating a certificate. Here's what you can do to accomplish this...
Setup and install Let's Encrypt
apt-get -y install git
git clone https://github.com/letsencrypt/letsencrypt /opt/letsencrypt
./letsencrypt-auto --apache -d seedbox.bouillaudmartin.fr
Then setup auto-renewal of the ca-certificate
Now add a crontab
sudo crontab -e
Enter the following:
30 2 * * 1 /opt/letsencrypt/letsencrypt-auto renew >> /var/log/le-renew.log
Save and exit.
This will create a new cron job that will execute the letsencrypt-auto renew command every Monday at 2:30 am. The output produced by the command will be piped to a log file located at /var/log/le-renewal.log.