Widget Not working in side bar

Hi..
Thanks a lot for the nice plugin. But i am having little issue –
I have configured everything correctly without one problem – URL Rewrite

Testing… (If this “testing” seems to take forever to load, use this direct link.)
What do I do if the Rewrite Diagnostics fail?

If you get a 403 and 404 on the Rewrite Diagnostics test, request your hosting provider whitelist your domain on mod_security. This problem has been encountered with Host Gator* and **GoDaddy.

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Now i need to know what steps need ed to follow to work the widget in the sidebar area. The plugin is working in the wp-admin page vey well.
Hope to get the reply soon.

http://wordpress.org/plugins/wordpress-social-login/