Ok thank you very much for your answer, I'm totally worried now.
The only reason that I can see is that the last time I logged in was about 6 mounts ago. Otherwise nothing more than casual trading.
Based on your reply it seems to me that they are going to close your account after 7 days and you have that time to withdraw your fund from there. In a situation like this you can login to your account and just transfer fund anywhere you want.
If i am not wrong then your login credentials are not working. Right? Then you can reset your password by using your account email but if its showing disable notification after giving login details then "Bittrex support" is the only way for you.