Have you selected "Notify subscribers" under advanced settings when you publish your videos? Also, your subs can check their account and notification settings: https://goo.gl/PdDKZW . Keep us posted.
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
Have you selected "Notify subscribers" under advanced settings when you publish your videos? Also, your subs can check their account and notification settings: https://goo.gl/PdDKZW . Keep us posted.