Google adsense plugin configuration issue

I installed the official google Adsense plugin to my Wordpress blog.

After I made the ads placement and going to save the settings I got this error:

Sorry we were unable to save your configuration. Your site took too long to respond. Please try again.

I'm trying since yesterday but there were no change just getting the error..

My Adsense account already approved and the ads was appeared on my site but on different theme.

Your support is highly valued

via Chebli Mohamed