I have been made aware that Bittrex has disabled the PRO wallet.
I have made a support request as I can't get a response on their IRC.
I image its because of the lack of blocks due to CTYH closing down the main mining pool and our explorer without warning last week.
Will keep you updated.
Don't Panic.
Kind Regards
Darren
It's good you updated us before people start panicking.
Just talk to Bittrex and when it will resolve update us.