I have had the Now membership for two weeks. I purchased it specifically to watch Westworld. I can only watch NOW on my mobile phone. I do not own a smart TV so my televisions are older. I don`t know what to do. It really sucks to watch Westworld on my small mobile phone.
As long as your TVs are new enough to have HDMI inputs, you best bet is to buy a Roku device or an Amazon Firestick. One of these will make any unsmart TV with an HDMI input into a smart TV, with myriads of channels as well as Now.
Amazon are having Prime days 12 and 13 July, so expect to get a real bargain on a Firestick around the £20 mark. You might even be able to afford more than one, depending how many TVs you want to make smart.
I presently have the same problem, though NOW DID work for me over 2 years on my laptop. An update was signalled yesterday since when I can't play NOW as the installation doesn't work now on my laptop. I'm going to post about this so you can see what happens with me. I was watching Westworld too!
I have a 64-bit Windows laptop with a 32-bit VM and a Mac, on my desk, ready to reproduce any problem situation that might arise and so far no-one has even told me if they are having a Windows problem or a Mac problem 😢