Cornerstone plugin installed but not activated


I purchased and installed X Theme, it says the plugin is installed but when I try to activate it it gives the following error:

Fatal error : Cannot redeclare cs_generate_data_attributes() (previously declared in /homepages/10/d865529732/htdocs/app866424572/wp-content/plugins/tco-video-lock/functions/includes/cs/helpers.php:4) in /homepages/10/d865529732/htdocs/app866424572/wp-content/plugins/cornerstone/includes/utility/helpers.php on line 295

I contacted Archetyped and this was their response: Hi, this is the support forum for the Cornerstone plugin in WordPress’ official plugin directory.

It appears that you are using a different plugin that may be using the same name, as the details you provided do not match this plugin. The plugin you are using may include support information on the plugin’s own admin page. You may also be able to find support information via the site where you downloaded/purchased the plugin.

How can we solve this?