YouTube Kids may not be working due to several common issues. These include an unstable internet connection, changes in parental security settings, overloaded cache and data, or using an outdated version of the app. Troubleshooting steps involve checking your internet connection to ensure stability, logging out and back into the app to reset your account settings, and updating or reinstalling the app to fix bugs and compatibility problems. Clearing the app cache and data can also help resolve performance glitches. If these steps fail, using YouTube Kids without signing in might be a temporary workaround, though this limits parental controls. Additionally, ongoing updates or server issues on YouTube's side could cause temporary service interruptions. Checking for app updates and maintaining device software current are recommended for smooth operation. If the account profile specifically stops working, using the app without signing in has been reported as a workaround by some users recently.