Yes, you should go to admin > venustheme > ves verticalmenu > configuration > enable the option “Enabled Off Canvas Menu”, enable same option for ves megamenu. Please give me the site admin if you can not setup the verticalmenu show on mobile devices
Do you want to setup quickstart package which compatible with magento 18.104.22.168 ? Yes we can build the quickstart for you and send you direct link.
Answer for installed quickstart, but menu left menu on mobile doesn't show