If you click on a player and see the WIS error page, that means your browser is either not logged into WIS or you are logged in, but set to the wrong team. When you see the error page, just manually go to WIS, log in, and set it to the correct team. Leave that browser open, then clicking on recruits in the tool should work.
Not sure about the signed players not getting updated. Be sure to update recruits each time you go to use the tool so that it's in sync with the site.