I bought the theme and I’m having some problems in the installation of plugins .
Visual composer displays the following error message: Fatal error: Call to undefined function add_shortcode_param when I try to activate
When I try to import the slide – demo content , I get the following error: Error : Wrong slider export file format ! This could be because the ZipArchive Caused extension is not enabled .
For Revolution Slider, please make sure that you try to upload the TXT file. If you do not manage this, please open a ticket here http://support.wpestate.org/ with your wp-admin credentials and we will try to help you.
Regarding Visual Composer, the error seems to be from the server, you can try to install via FTP.
If you need help, please open a ticket and provide wp-admin and FTP credentials there and we will help you.