As for #2, I believe you need to exit PT and then open it back up to get the main app up to date. Otherwise it's just the HUD. I've noticed before that it doesn't show any player even if I just played against them in a previous match.
As for looking up more detail on their stats, you can click in the HUD itself on someone and it'll give you a popup with more details. Such as how many hands did he go to a showdown with, out of those, how many did he win. And a whole bunch more. To exit the popup, just click inside of it.