Need clarification on adsense account
When I applied for adsense account through ISC last week, I got immediately a mail from Google saying that my payment address got changed. After that I did not receive any mail further. I am able to login to my adsense account, which shows zero revenues. In http://www.indiastudychannel.com/adsense/v4/index.aspx page, it shows my publisher Id and Google status as ACCEPTED. I was waiting for adsense account approval mail from Google. I am of the opinion that I should not do any thing until I get an approval mail from them.But today I got a mail from Google with the subject line "Please place your Google AdSense ad code on your site". In side the mail, it says "We've noticed that you've successfully created your first ad unit, but you haven't placed your ad code on
http://www.indiastudychannel.com/adsense-api-profile/bhuvannalla.aspx. This step is necessary for the full activation of your account."
I am confused. What should I do now?