Install google analytics plugin in Kopy WP, but failed

Hi,

I installed “google analytics for WP “in my wordpress,when I enter access code to the text bar, then nothing happened.
I checked the Errors & Debug, information as below. Any advise?

For errors and/or other issues check this documentation page and related resources.
Last Error detected
Last Error: 2015-05-20 16:35:33: exception ‘Google_IO_Exception’ with message ‘couldn’t connect to host’ in /data/home/qxu1194170184/htdocs/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/IO/Curl.php:86
Stack trace:
#0 /data/home/qxu1194170184/htdocs/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/IO/Abstract.php(135): Google_IO_Curl->executeRequest(Object(Google_Http_Request))
#1 /data/home/qxu1194170184/htdocs/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/Auth/OAuth2.php(113): Google_IO_Abstract->makeRequest(Object(Google_Http_Request))
#2 /data/home/qxu1194170184/htdocs/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/Client.php(133): Google_Auth_OAuth2->authenticate(‘4/xi8DYUsYSEA5E…’)
#3 /data/home/qxu1194170184/htdocs/wp-content/plugins/google-analytics-dashboard-for-wp/admin/settings.php(750): Google_Client->authenticate(‘4/xi8DYUsYSEA5E…’)
#4 /data/home/qxu1194170184/htdocs/wp-includes/plugin.php(496): GADWP_Settings::general_settings(”)
#5 /data/home/qxu1194170184/htdocs/wp-admin/admin.php(226): do_action(Array, Array)
#6 {main}
________________________________________Error Details
Error Details: None
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