As i can see, your version is far from the recent where many things has been fixed. Also, we have noticed that you have different sections that display on mobile and on desktop. It is possible to display different sections on different devices but you need to have recent version of the BeTheme installed.
please go to theme folder, create php file with phpinfo() function inside and send us link to that file so we can have a look on your server settings. The problem is probably related with those limits but to be sure which one is the reason, we need that link. For more details about file creation, please visit https://mediatemple.net/community/products/dv/204643880/how-can-i-create-a-phpinfo.php-page
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