The most common culprit is bandwidth. Open a speed test and check your connection — streaming 1080p requires at least 5 Mbps, and 4K needs 20 Mbps or more. If the numbers look fine, try lowering the quality manually in the player settings. Also clear your browser cache or restart the app: cached junk builds up fast and breaks playback.
This usually happens after an update that didn't install cleanly. Force-close the app, clear its cache in your phone's settings, then reopen. If it still crashes, uninstall and reinstall — that fixes corrupted local data almost every time. On desktop, try a different browser to rule out an extension conflict.
If the search bar spins endlessly or shows nothing, the issue is often a temporary glitch in the session. Sign out, clear cookies, sign back in. If results are irrelevant, check whether Safe Search or location filters are on — they can silently narrow results in unexpected ways.
If login fails with a generic error, first try resetting your password — sometimes sessions just expire. If you're getting a 'This browser or app may not be secure' message, update your browser or switch to Chrome/Firefox. Two-factor auth issues are usually tied to a wrong system clock: sync your device time automatically in settings.
Large files fail when the connection drops even briefly. Use a wired connection if possible. Make sure the file format is supported — MP4 with H.264 is the safest bet. If the upload hangs at 0% or 99%, pause it, wait 30 seconds, and resume. Persistent failures usually mean the file is corrupted — re-export and try again.
This is almost always a session problem. Sign out completely, clear cookies, sign back in. If actions appear to work but reset on refresh, disable browser extensions one by one — ad blockers sometimes interfere with API calls that record user interactions.