@Alois Ok it’s still using PHP 5.6 in the webserver. Note that
php -v is giving you different results because command line PHP is not always the same as the one used by apache.
Please post the contents of
/etc/apache2/sites-enabled/001-fog.conf here. As well run the following commands and post output here:
ps ax | grep fpm systemctl status php7.0-fpm.service systemctl status php7.2-fpm.service