I can not stream anything on Roku TV. I have e done al resetting and reinstalling. Checked my IP Address, the system is not over heating, doesn't work on my phone or TV. I am in Canada. Read all the other posts and trouble shooting. None of your solutions work. It sounds like Roku is the problem.
For clarification, are you unable to access the channels on your Roku device because an ad covers the entire screen? Please let us know more about the issue you're experiencing. We'll be able to further assist you from there.