Hi @firstave,
Sorry to hear of the problem you are having.
I have tested it on my test site and it’s working fine for me using latest version of Jevelin theme.
Please make sure you have activated theme required plugins such as Unyson plugin.
Also, please make sure you are using latest version of PHP on your server by referring the information provided in the following pages.
https://www.wikihow.com/Check-PHP-Version
http://php.net/supported-versions.php
Can you please try temporary enabling WP_DEBUG mode? To do this, just go to wp-config.php include this:
define('WP_DEBUG',true);
You might already have a line for WP_DEBUG, so just make sure it’s set to true.
Let me know what errors if any you are getting when you face this issue.
Best regards,
Shufflehound team