Are you sure your account was full verified? I don't think your account has been vitrified with KYC.
There is few possible reason why your account would ban on their
FAQ Possible reasons your account may be disabled:
You requested that your account get disabled
We suspected your account was hacked and disabled it for you
You attempted to verify your account with an identification document that has already been used
Your account was involved in irregular trading activity
You violated the Bittrex terms of service
As far as I know Bittrex is disabling unverified account those has not yet submit their KYC verification document.
It is strongly recommended to deposit funds and trade after your account is verified.
Please read their
terms and conditions so may be you will get your answer. However they should return users fund like coinbase even they are disabling account.
I can not withdraw funds, the account is written that is fully confirmed. Further there is no place.