Could be several reasons — issue with the internet connection, you're using Google Apps domain which may not be enabled by your admin, or your ISP may be blocking YouTube. Give these steps a try: https://yt.be/help/oTZR . Keep us in the loop!
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
Could be several reasons — issue with the internet connection, you're using Google Apps domain which may not be enabled by your admin, or your ISP may be blocking YouTube. Give these steps a try: https://yt.be/help/oTZR . Keep us in the loop!