I see Home Words Activity and Discussion. But, the immersion button seems to have disappeared. Is this only me?
My immersion button is still present, so I don't know why yours has disappeared. Sorry that I can't be more help!
Mine is still there. Did you change to a new language? Some of the newer languages (especially if they are still in beta) don't yet have the Immersion feature.
It disappears when you enter courses that do not have it. Dutch does not have it (I see that as one of your languages).