If blank page on the mobile device

evoting v3.3-r5 -> check if JQuery-3.1.0.js is in Moodle folder (moodlepath/lib/jquery/jquery-3.1.0.js), if not download (https://code.jquery.com/jquery-3.1.0.js) and copy / paste into it

evoting v3.4-r1 -> check if JQuery-3.2.1.js is in Moodle folder (moodlepath/lib/jquery/jquery-3.2.1.js), if not download (https://code.jquery.com/jquery-3.2.1.js) and copy / paste into it