Check to see if you have been Banned from Google Adsense or Search Engine!
Google adsense is a free and simple advertisement platform that pay billions every year to publishers from advertizement.
With this tools you will be able to check if your website/domain was banned by either Google Search Engine or Adsense. If a website has been banned by google you should move your website to another domain name!
You should check your domain and website often.
If you plan to buy a new website you should also check it with this tool.