yes and no ^^
i have read that muximux cant access http if it is set in https, but it still can access https sites if set as http.
so i have set port 80 to listen to muximux, and i have set default page on muximux to https://IP, and it work well
after installed quickbox, just copypast all this, it will install Muximux to /srv/Muximux and change quicbox config for muxi on http://IP
then you will have to set muximux config with webui
copy past that as root, at least it worked for me if anny issue, there is a .bak of apache config file
echo '##########'
echo '# install Muximux '
echo '##########'
apt-get install git
cp /etc/apache2/sites-enabled/default-ssl.conf /etc/apache2/sites-enabled/default-ssl.conf.init
cd /srv
git clone https://github.com/mescon/Muximux.git
chown -R www-data.www-data /srv/Muximux
sed -i -e 's/<VirtualHost \*\:80>/<VirtualHost \*\:80>\n DocumentRoot \"\/srv\/Muximux\"\n <Directory \"\/srv\/Muximux\/\">/' /etc/apache2/sites-enabled/default-ssl.conf
sed -i -e '/<Directory \"\/srv\/Muximux\/\">/{n;s/.*/##&/;}' /etc/apache2/sites-enabled/default-ssl.conf
sed -i -e '/##/{n;s/.*/##&/;}' /etc/apache2/sites-enabled/default-ssl.conf
sed '/<key><Directory \"\/srv\/Muximux\/\"><\/key>/!b;n;c<string>###</string>' /etc/apache2/sites-enabled/default-ssl.conf
sed -i -e 's/##/#/' /etc/apache2/sites-enabled/default-ssl.conf
service apache2 restart