You tube-----what can be wrong?

I like to search you tube for videos that interest me. I am using a tablet computer connecting through a wireless router. When I click the you tube icon, I get connected and can scan for videos that interest me,but the video won't play. A little circle just goes around and around and then a message say connection lost. I can connect to YouTube through Chrome, but the video plays for a few seconds and pauses, then resumes and pauses again. Help,I am getting frustrated.