We'd like to help. Which device are you on? Have you tried signing out of the account and signing back in? Also, to see a comprehensive view of all of your activity across YouTube apps, as well as control your saved activity, click here: https://goo.gl/CY3oXo
Thanks for letting us know. This might happen if you're using a shared device. Also, share your thoughts using a feedback report: https://goo.gl/WdI0BK . While every individual report may not get a direct response, we do review everything and fix issues.