Now I will share how to resolving upgrade your hosted account to a non hosted account that found error like this “We apologize for the inconvenience, but we can not process your request at this time. Our engineers have been notified of this problem and will work to finish “. I finally decided to make the tutorial to resolve like the example below:
3. Now, try back to upgarde your hosted account. Simply click My Ads → Other Product → Put your site Address. If success, you will showed adsense code like the picture below.
4. Before you click Done, Put the code to your site first after <head> or before </head> section on html code then click save.
5. Now click Done on Google adsense page. Just wait, because google will review your application and will inform to you by email.
Good Luck ^.^
Source : http://www.teamgadget.net/2017/02/upgrade-akun-hosted-ke-non-hosted.html