Troubleshooting AdSense warnings about ads.txt
What to check when AdSense shows 'Not found' or 'unauthorized sellers'.
Check the exact URL: https://yourdomain.com/ads.txt (no redirects to another path).
Make sure your AdSense publisher ID (pub-...) is correct in the google.com line.
Ensure the file isn't blocked by robots, WAF, or server rules (403).
If you use www, verify both variants resolve correctly to the same ads.txt.
Give it time: crawlers may take hours/days to refresh after updates.
Use this checker to confirm HTTP status, content-type, and Google entries.