I have a site that will not show adsense ads at all due to my reckless testing of adsense ads on that domain name. Now it has been banned to show adsense ads. I will now make the site 'legitimate' by giving good content, so how do I ask Google to start showing adsense ads in this banned domain name?
If your account is not disabled only this domain has the problem then yes. write a nice mail to AdSense support and they will enable ads. I did it before. But make sure your site comply with TOS before you send the mail.
Your chance of getting back your account is next to nothing. You should start thinking of finding a new ad program to join.
there are many thread that seem to have same problem with you..take your time to searching instead of creating new thread...
If you want to try getting it back make sure your site is completely with the TOS. Mail them but I don't think you'll get a good response for it