I'm having a similar issue and yes, it's frustrating. I have the ARC996 pro and im using the BCD996T. Had to format computer and reinstall software.
First issue: When i open ARCpro996 software i get: welcome to arcpro software, this is a time restricted demo version. I already registered both key codes after installing software. It finished by printing out reg. info and such. Still goes into demo mode when i open. Says its 30 mins.
Second issue: when i try and connect to radio reference its shows in the bottom bar in 'blue' "radiorefdisconnected, wait retrieving http data" internets fine, baud is fine com is fine....prem. paid for in full. Scanner is detected, pulls freq's from scanner and sends to scanner....was working before my subscription expired. Now i'm a prem. member again and i cant use anything. when i click tap to connect, there are no county, state or systems to view. 3 buttons below the connect are grayed out. user name/password are correct and in lower case. I even logged in thinking maybe i had to be logged in prior to opening software. Would appreciate some help. Spent 4 days trying to get this to work.
