Hello Satrio. Try clearing your cache first and foremost ( Tools > Clear Recent History... ). If that doesn't work, make sure you have javascript and cookies enabled ( Tools > Options > Content and Tools > Options > Privacy ). If that doesn't work, try disabling all your extensions to see if any of them is creating some kind of incompatibility. If that fixes the issue, you need to disable them one at a time to find which one it is (disabling half of them to find in which half it is, then disabling half of the faulty half and so on, that will do it).