I tried again and now it seems to work (I'm on Chrome, haven't changed anything).
EDIT: It seems inconsistent. Sometimes works sometimes fails (inplay page works always, individual matches not always). Will check later again, not many inplay matches now.
Have you asked your ISP maybe the issue comes from them?
This is unlikely to be on my side as "ralle14" posted similar experiences.
If this doesn't come from your end, let's wait until the devs finds out where the problem comes from.
Dota 2 time, Epicenter Major the last major for this year. While PSG.LGD and OG is live now, there's still 2 more matches that's good to bet which will commence after the said match.
There's also other interesting features to bet such as 1st barracks, 1st tower not just being the winner of the game. Sportsbet, will you add the first blood bet and first 10 kills?