If queries suddenly return nothing or the page just spins, start with the basics: clear your browser cache and cookies, then reload. Stale cached data is the most common culprit. If that doesn't help, try a different browser or switch from Wi-Fi to mobile data to rule out a local network issue.
The page loads but results never appear — this usually points to a JavaScript conflict with a browser extension. Disable your extensions one by one and reload. Ad blockers and script blockers are the usual suspects. Also check that your browser is up to date; outdated versions often choke on modern web apps.
When you switch to the Images or Videos tab and get blank tiles or broken icons, the issue is often a strict content filtering setting or a firewall on your router blocking media CDN requests. Go to Settings and check Safe Search and content preferences. If you're on a corporate or school network, media may be filtered at the router level — try from a personal connection.
Bangs like !w or !yt stop redirecting you, or Instant Answer boxes disappear. This often happens when the browser intercepts the query before it reaches the search engine. Make sure DuckDuckGo is set as your default search engine and that no browser extension is rewriting your search URLs.
The Privacy Essentials extension icon goes gray or stops blocking trackers. First, check if the extension is enabled in your browser's extension manager. If it is, remove and reinstall it — corrupted extension files are a frequent cause. Also verify the extension is compatible with your current browser version.