In the mobile version the ! symbol pops up and it is pretty easy to check fans often.

Now maybe I'm getting paranoid but... I do notice that the notification for friend's matches doesn't always appear right away. Like, even if I'm doing nothing active, i won't have the pop-up to support the match until late in the game. So there is maybe potential for Nordeus programming to act with bias in deciding when or even to whom to display the friend support notification.

That said, I'm very sceptical.