If WP QUADS settings screen seems to be broken or incomplete, shown as below you just need to deactivate your browser ad blocker to resolve it:
In most cases you also get a notice saying:
You need to deactivate your ad blocker to use WP QUADS settings. Your ad blocker browser extension is removing WP QUADS css ressources and is breaking the settings screen! Deactivating the ad blocker will resolve it. WP QUADS is used on 60.000 websites and is into focus of the big adblocking companies. That’s the downside of our success but nothing you need to worry about.
This message is not shown under some rare conditions so we decided to add this point to the troubleshooting guide.