Hello,

Thank you very much for choosing our theme and for contacting us.

Please deactivate all the plugins not related to the theme and switch the parent theme, check the issue, If the problem has gone, activate the plugins one by one, checking the issue to detect which one causes the problem.

Here is the list of the plugins related to the theme:

Contact Form 7
Mailchimp for WordPress
Safe SVG
Slider Revolution
WooCommerce        
WPBakery Page Builder
XTEMOS Post Types plugin

Best Regards