[Plugin: WordPress SEO by Yoast] Index problem!

When I use Wordrpress Yoast seo,my website ranking falls…I set up settings from; http://geniusgeeks.com/how-to-setup-configure-yoast-wordpress-seo-plugin-settings/

I was using All in seo pack,and my web site was indexing well.I’m want to use yoast,how to can I fix that?

website: http://www.animecenneti.com

I know,no post in there but; my website when I write ” http://www.animecenneti.com ” to google, I was can my website…

I know,my English is bad.But I did’nt use google translate ^_^

Thanks,good days.

P.S; Can It be a ” robots.txt ” problem?

http://wordpress.org/extend/plugins/wordpress-seo/

[No bumping. If it’s that urgent, consider hiring someone.]