Thanks for the post.
We would recommend taking a look at the information provided by our Support page here: Fix your frozen Roku TV
If you are still experiencing an issue, you'll want to reach out TCL to assist you further.
You can reach TCL support here: https://support.tclusa.com/televisions or at 1-877-300-8837.
Please keep us posted what you find out.
Roku Community Moderator