: Reinstall the TeraBox desktop app . When you open your browser, ensure you accept and enable the TeraBox browser extension when prompted.
: While the JDownloader application itself is safe, always download it from the official site to avoid bundled adware in unofficial installers.
: If the extension triggers a pop-up, JDownloader 2 should now be able to intercept that valid, refreshed link. Key Tips for Better Results
Here is the most effective current workaround shared by the community to get them working together: The "Extension Sync" Fix
Surprisingly, the fix often involves the official TeraBox desktop client and its browser extension, which helps JDownloader "capture" the correct redirected links.
: Users on Reddit suggest using a free VPN (like Proton VPN ) set to a Singapore server to bypass speed throttling, sometimes reaching speeds of 1-2 mb/s even on free accounts.
: Uninstall your current TeraBox app and restart your computer.