Cant reach the site

When I click on the point where I can find some more functions where it says "Reading the documentation " It just says the site cannot be reached is there something am not doing right?

The other problem am having is that when I want to save the notebook to it will ask for the API key. Then if I click where it says API key then I paste it in the provided potion it seems to go on forever it is not saving what am I doing wrong