Can't use my account?
I loaded OSM and found that I lost in the Champions Cup. Out in the quarterfinals. I selected the option to quit the game and collect my coins, and the page then diverted me to the Dashboard... of a game I was no longer in. The game then, once loading the page, notified me that "Something went wrong, we'll refresh the page to fix this problem." The page refreshed, and once refreshing, it gave me the message again. This process has repeated many times, and I have even tried logging off as quickly as possible while the error notice loads to try and fix things, but that has been ineffective, even though I have been able to click the "log out" button in time mutiple times.
Try clearing cache and temporary files and see if this helps solve the problem.