I tried refreshing, but they just cant see it or hear it.

Does the link start with http or https?

Sometimes, Certain videos can't be shown on the T.V. in the tribe house.
Happens a lot..

Are your tribe house members all from the same country? The video might be forbidden in the other countries :/

i cant see the screen it just goes completeley white?

Maybe perhaps the video currently playing is blocked for people in the different country.
Are you sure you did a YouTube video?
Are you on Standalone or browser?

If you have the rights, try using /np After 2 mice enter the tribe house it stops refreshing, therefore the other mice can't see the video

happens sometimes but it still works for me