I did restart the server several times.
apachectl -S says this:
VirtualHost configuration:
*:443 is a NameVirtualHost
default server butterfliesandhurricanes.net (/etc/apache2/sites-enabled/butterfliesandhurricanes.net.conf:9)
port 443 namevhost butterfliesandhurricanes.net (/etc/apache2/sites-enabled/butterfliesandhurricanes.net.conf:9)
alias www.butterfliesandhurricanes.net
port 443 namevhost chainskills.com (/etc/apache2/sites-enabled/chainskills.com.conf:9)
port 443 namevhost epseelon.com (/etc/apache2/sites-enabled/epseelon.com.conf:8)
*:80 is a NameVirtualHost
default server ns388372.ip-176-31-253.eu (/etc/apache2/sites-enabled/000-default.conf:1)
port 80 namevhost ns388372.ip-176-31-253.eu (/etc/apache2/sites-enabled/000-default.conf:1)
port 80 namevhost butterfliesandhurricanes.net (/etc/apache2/sites-enabled/butterfliesandhurricanes.net.conf:1)
alias www.butterfliesandhurricanes.net
alias butterfliesandhurricanes.org
alias www.butterfliesandhurricanes.org
alias fliesandcanes.com
alias www.fliesandcanes.com
port 80 namevhost bypassgastrique.fr (/etc/apache2/sites-enabled/bypassgastrique.fr.conf:2)
alias www.bypassgastrique.fr
alias bypassgastrique.be
alias www.bypassgastrique.be
alias bypassgastrique.eu
alias www.bypassgastrique.eu
port 80 namevhost chainskills.com (/etc/apache2/sites-enabled/chainskills.com.conf:1)
alias www.chainskills.com
alias chainskills.io
alias www.chainskills.io
alias chainskills.org
alias www.chainskills.org
alias chainskills.net
alias www.chainskills.net
port 80 namevhost epseelon.com (/etc/apache2/sites-enabled/epseelon.com.conf:1)
alias www.epseelon.com
port 80 namevhost sebastien-arbogast.com (/etc/apache2/sites-enabled/sebastien-arbogast.com.conf:2)
alias www.sebastien-arbogast.com
ServerRoot: "/etc/apache2"
Main DocumentRoot: "/var/www/html"
Main ErrorLog: "/var/log/apache2/error.log"
Mutex rewrite-map: using_defaults
Mutex ssl-stapling-refresh: using_defaults
Mutex ssl-stapling: using_defaults
Mutex ssl-cache: using_defaults
Mutex default: dir="/var/run/apache2/" mechanism=default
Mutex mpm-accept: using_defaults
Mutex watchdog-callback: using_defaults
PidFile: "/var/run/apache2/apache2.pid"
Define: DUMP_VHOSTS
Define: DUMP_RUN_CFG
Define: ENABLE_USR_LIB_CGI_BIN
User: name="www-data" id=33
Group: name="www-data" id=33