Now tv update for Mac is currently stuck on 100% and will not progress past this. Have tried to uninstall the app and then reinstall but the same thing occurs. Won't let me watch anything unless the app is updated??
I have the same problem
I don't use a Mac or PC when watching NOW, but see if anything in this linked thread below that i found under the Community search helps or not.
This might not be the same issue or relevant in your particular case, but maybe worth a read.