I just tried to use the TV Anywhere app to watch TV and I am getting the message that my phone has "Unauthorized Modifications". It hasn't been modified. I'm using the stock Lollipop (v5.0.2) CyanogenOS One Plus One ROM (12.0YNG1TAS0YL)
Bad news. In its current incarnation, It wont work.
There are some updates due to go in Cyanogen stables this week that MAY help
However if you were maybe to find an .apk somewhere that had been rebuilt for Cyanogen , THAT might work. As its unofficial its probably not allowed to link to it on here. I personally have no idea where one might look for such things..
eXtra Doughnuts for A helpfull reply from Developers might help...