Works for me just fine on my Android.
Has it worked before?
If not, you have to make sure you are using the primary email account for accessing the app.Or the email you are using must be enabled to allow access (if memory serves correctly).
I was frustrated to find that I could get on to Live Extra (trying to watch Liverpool EPL game) using my Android phone with the NBC app. but I only got error messages when trying to do it using my Windows 8.1 laptop or my TV or blu-ray player's browsers. Same credentials produced different results. Nice job, NBC and Verizon...