• We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.
Showing developer posts only. Show all posts in this thread.
Actually I can tell you exactly what happened. ;)

You see the forum uses two addresses one is
http://forum.paradoxplaza.com/forum
The other is
http://www.europa-universalis.com/forum
So you are logged in to one of these, then you follow a link that uses the other one and you must log in again.
Just do what I do and let your computer remember both logins and you will never have a problem.
 
Same answer to you.
 
I am suprised, as Mod's usually notice this the most due to that other area of the board we have access to.
I bet you logged into the other one early on so you did not notice.