That's odd. If this was a recommended notification, you should be able to change the settings from the YouTube app > Tap the menu button > Settings > Notifications and uncheck “Recommended videos”. Let us know.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
That's odd. If this was a recommended notification, you should be able to change the settings from the YouTube app > Tap the menu button > Settings > Notifications and uncheck “Recommended videos”. Let us know.