4 of the plugins will not install

Im going to guess this is not do to my mistake as i attempted to go and down load them manually and it came back site does not exsist
I Do hope we can resolve this as i am alredy having a hard enough time setting up my store as it is. thank you


Install Required Plugins
The installation process is starting. This process may take a while on some hosts, so please be patient.

Installing Plugin Responsive Visual Composer (1/4)
Downloading installation package from http://kutethemes.net/wordpress/plugins/responsive-js-composer.zip…
An error occurred while installing Responsive Visual Composer: Download failed. cURL error 7: Failed to connect to kutethemes.net port 80: Connection refused.

Installing Plugin Revolution Slider (2/4)
Downloading installation package from http://kutethemes.net/wordpress/plugins/revslider.zip…
An error occurred while installing Revolution Slider: Download failed. cURL error 7: Failed to connect to kutethemes.net port 80: Connection refused.

Installing Plugin Turan Toolkit (3/4)
Downloading installation package from http://kutethemes.net/wordpress/plugins/turan-toolkit.zip…
An error occurred while installing Turan Toolkit: Download failed. cURL error 7: Failed to connect to kutethemes.net port 80: Connection refused.

Installing Plugin WPBakery Visual Composer (4/4)
Downloading installation package from http://kutethemes.net/wordpress/plugins/js_composer.zip…
An error occurred while installing WPBakery Visual Composer: Download failed. cURL error 7: Failed to connect to kutethemes.net port 80: Connection refused.

All installations have been completed.