@Deeeez Welcome to the Roku Community.
Thank you for contacting us regarding the issue you're experiencing with the YouTube app logging you out. We're here to help.
Let's go through a troubleshooting step to resolve this problem. Please follow the instructions below:
- On the Roku home screen, press the star (*) key on your remote and choose "Remove channel".
- Next, restart your device from Settings > System > Power > System Restart (If you do not see a Power submenu, skip to the next step).
- Once your player/TV starts up again, go to "Streaming Store" on the Home screen, and add the channel back once more.
You may also refer to this link: How to resolve a channel playback issue | Official Roku Support
Once this has been performed, kindly access the app once more and log-in using your credentials.
We hope this works, and keep us posted on what you find out.
Best,
The Roku Community Team
Jharra Q.
Roku Community Moderator