YouTube sign in

I've tried that I have everything I need it just says sign in successful on my phone but it tells me to try again on the tv after I put in the code

Hello, first it's a pleasure to be able to help you today.

My name is welcome to the community.

Hello TheresaJohnson9, what procedures you've tried, usually on Xbox and you're logged into your Xbox profile you have to have authorization on the App or your PC account, you've already done so, try uninstalling the App and reinstalling again, either on Xbox and your mobile phone.

Hello TheresaJohnson9! I'm Claus, an Independent Microsoft Community Consultant for Xbox! Glad to be able to help you!

If you have already tried to reinstall the YouTube on your Xbox, try to follow these steps:

1. With the console on, press and hold the Xbox button on the console itself until it shuts off.

2. Unplug it from the wall for 30 seconds.

3. Connect it to wall again.

4. Turn it on.

5. Try to run the YouTube app and see if the issue has been resolved.

Does it say this on the YouTube screen when you launch the YouTube app? Are you also signed in to the YouTube account that you have already?

Hello, matus!
Try these following steps, this may fix your problem.

1. Log in through your phone.
2. Delete the app once you have logged in from your Xbox.
3. Reinstall the app.

Note that this is a fix only for the random signing out of your account.

As for not being able to sign in at all now, then I suggest you visit
Xbox Support. They may have some sort of idea as to what could be causing the sign in issue, however, I will add that the YouTube app can be a little problematic after a recent update. It is very possible, that your account has gone through a few sign-in
attempts on your console, and therefore caused a bug. I would suggest waiting and signing out of your YouTube account on
all devices and then sign in again. Then, try logging into the Xbox app version.

Hope this fixes everything! Let us know how it went, have a nice day.