Have you turned on the setting that allows AdBlock to whitelist individual YouTube channels and restarted your browser? If you have and you still aren't able to whitelist a YouTube channel, please try these troubleshooting tips:
- Make sure that you're using AdBlock and not Adblock Plus (ABP) or some other ad blocker. Only AdBlock features YouTube channel whitelisting
- Try clearing your browser cache and restarting your browser
- Manually update AdBlock
If you're still having issues after trying the above steps, contact our Support team. Let us know what you've tried and, if possible, send us your debugging information.