RocketSci says:

I am not sure they can accurately point fingers based on my experience trying to get in with two different NASA computers and a cell phone. None worked, giving a variety of flaky errors, web timeouts, and banners telling me to disable VPN (which was never a factor in the first place). I kept trying on my laptop while doing other work on my desktop, and finally got in just in time to hear the Q&A. I thought Mr. Isaacman did great — he’s a straight shooter, down to Earth, enthusiastic about the mission, and is clearly a smart person. Too bad NASA’s webcast infrastructure wasn’t up to the task. Guess what though, there are a lot of things wrong with NASA IT, so this was a fair sample.