did you exit the screen where it gave you the password? try again and do the login and then logout with exiting or doing anything to the tama. hope I helped!!
This happens a lot. When you get the login password on your v5, to log out, you have to press the A or B button. That will then show you your logout password. You then put your logout password online and then you are logged out!
So... first when u go to the Fifth Icon, u go to PC and it would show u a log IN password. Make sure you enter it correctly and then you can play a game and at the end of the game you will receive a log OUT password. press the A or the B button in ur Tamagotchi and u enter you log out password there.