I have Youtube TV and AT&T Wi-Fi

Ok
Let's try to reset your TV to factory settings then.

1. First, pull the power plug to the TV out of the outlet.
2. Next, press and hold the power button on your Toshiba television.
3. Wait just a few seconds, and then plug the television back in as you continue to hold down the power button.
4. You can let go once you see the television come on and show the Toshiba logo.
   You’ll then be directed into the recovery menu, where you’ll see the option to wipe data/factory reset the machine. You can scroll down to that menu option by tapping the power button on the television until it goes down to that option. Once you see the option highlighted, you’ll need to press and hold the power button.
   The screen will next show you a red warning that you are going to erase all your data. It will ask you to select yes if you want to wipe all your data. Scroll down to yes, and then press and hold the power button. Your device will set itself back to factory settings. The process should take about two minutes. After that, you will need to pair your remote control with the device again.

And let me know if any of the steps are not quite clear.
I'll be happy to clarify them for you!