Please ensure you have tried to claim your domain as outlined in our guide here.
If you still have trouble, you can try clearing your browser's cookies and cache, refresh, and try claiming again. You may also wish to try a different browser to solve the issue. Also, please make sure your VPN is disabled if you have one. This can interfere with your wallet's connection.
If you are still facing an issue, please contact us at support@unstoppabledomains.com with your domain name and any screenshots of the error (if applicable) and we will investigate this further for you.
You will need to restart the browser after installing MetaMask in order for the plugin to be detected