First pen, Kane is offside when initial pass is played, Lovren tries to stop the ball because of this, and that sends Kane through. I think it's odd if that's not an offside, so in some way, I'm not that tinkled off we didn't score the pen.
Second pen, Lamela is clearly kicked, sure, maybe he goes to ground with a bit of latin flair, but Van Dijk just kicks him in the leg in the box, and that's a pen all day long, so I don't understand the fuss. Looking at the replay where Lamela is supposedly in an offside position before Llorente heads the ball, he might have a kneecap or something in offside, but it's so marginal you can't really blame the lino for not calling it.
Add to that that we had the most shots on goal, most of the possession, and completely bossed them in the second half, I don't understand how the scousers feel they've been cheated here. They were brick, and bar Salah's goal in the second half, created fudge all.