When I collect my daily reward for my monthly Koban card, I have to log out and log back in for the number of kobans to be successfully updated.
This might be a related bug - when I play on one computer and then switch to another one, I have log out completely at the new computer (I cannot resume my browser session) before it will reflect the progress I made on the other computer. This is particularly true for money and kobans. I have not checked if XP and energy are affected.