Sometimes, AdSense ads are not visible on your website.
If your are opening the browser console (on chrome with F12) and you get the error “Failed to load resource: net::ERR_CONNECTION_REFUSED adsbygoogle.js”, it could mean that you are behind a proxy, using a VPN tunnel or more likely that your browser is running an ad blocker.
To resolve the issue deactivate your ad blocker and your AdSense ads should be visible again.