The earning became really low recently, at first I thought it's because the click price changed and didn't do anything, until yesterday I got a 0.
After I checked my adsense Cpanel I found the "Site Diagnostic" tab showed my own website "www.xxx.info"got blocked, but the reason is "NOT FOUND". The strange thing is, the Google Ads on my website are displayed normally. I tried to fix it but no Google suggestions suitable for my situation, anyone can help?

Pic 1: Diagnostic


Pic 2: My ownwebsite blocked and reason is unfound


Pic 3: Here is my robotx.txt content

It appears that on Mar. 22, AdSense bot couldn't crawl your site (maybe after several attempts) so the URL got blocked. It does seem odd though.

Request for clarification over the google blog or use the webmaster tools.