If you cannot log into YouTube successfully on the TV, here are some methods to do the troubleshooting for your reference:
1. Make sure the TV has internet access.
2. Clear the cache of the APP on the TV and try again.
3. If the TV has internet access, please check if there is a new version of software updated online or not.
Press the Home button on the TV remote, and select Settings Device Preferences About System update Network Update:
If the issue cannot be resolved, please feel free to call the TCL Helpline for further help.
