Where can I find the password from blue building?
I have finished all points. :C
Blue Building password
You find the password randomly by refreshing at the Blue Building page. Sometimes people find it right away, sometimes it takes a while. Once the random event happens, though, the site remembers it for you. You don't actually have to remember it.
AKA, if your Blue Building checklist says that it's completed, then you don't need to worry about it. You can go right in.