I have roughly the same problem. I spend around $140/mo for internet and cable, of which I receive the full NBC suite of channels. However, the app refuses my provider's login information. When I contacted my provider, they just sent me up to an NBC support clerk who told me essentially "Wow, that really sucks." and that was it. There was no recourse, simply re-acknowledging that I had a problem and they would attempt nothing to fix it.

I normally wouldn't be overly concerned about it, probably just a bit flustered, but this is a global event that occurs twice a decade. I feel this should really be something public broadcasters should control, not mega-corporations.

They run every few minutes, it feels kind of random. But they have a very nasty habit of running right at critical moments during the games.