The plugin displays and checks the validity captcha when filling out the registration form JoomShopping.

The plugin does not have a built-Captcha. It provides a conclusion that captures, which is installed by default in Joomla (/administrator/index.php?option=com_config)

Installation instructions:
install the plug as a normal plugin Joomla.
Then in the Plugin Manager you must enable it.
You must also select the default captcha list captures settings Joomla (/administrator/index.php?option=com_config).