Help with Norton Safe Verification​on

I/m trying follow Verification on steps but It does not work for me.

 

Steps I followed:

1. Log back into Norton Safe Web > My Profile > Site Dispute and you should see the name of your website and three options listed under Action.
2.  Click on "get authentication file”. You will be presented with a new window indicating a file download. "Save" the HTML file to a convenient location on your computer.

3. Upload / copy the saved HTML Document to your Root Directory.

4.  Click on "verify site ownership". A reminder message will pop up asking you to confirm that you have placed the "authentication file" in your Root Folder. Click OK.

 

The system return fail message.

 

I add meta tag to all pages and tried click on verify site ownership" same result.

 

My web site www.notthischarter.com