JaW Templates Support Forum

Hello,
I installed your theme GDN, I had some problems installing the demo but disabling all plugins are managed.
However I can not make any changes on the panel and just save me lose all the default configurations of the demo.
From the log I get the following error:

Got error 'PHP message: PHP Fatal error:  Call to undefined function jwOpt() .... /wp-content/themes/gdn-theme/framework/lib/class_panel.php on line 927

I tried both with NGINX, Apache, PHP 5.6 and PHP 7.0, Wordpress 4.7.2 and 4.7 always the same mistake.

The site is in production and can not remain in service too long.

Can you help me?