As you can see i'm currently playing australia and i just started to learn this game yet. Somehow i saw that i can renew my ship with a newer one so i just clicked on it. Now it seems that i can't use my 5th naval dockyard it says 4/5 in use. I'm clicking to use it my it's color is grey rather than blue. I think it's not even a bug, how to fix this ? Please Help !!!