How the heck am I supposed to complete the "predict the dpc winner" when there are never any freaking bet opportunities in the freaking dpc app? I've been checking them out regularly for a few weeks now and I haven't see a single opportunity to bet, the list is always empty...

google is hard - https://liquipedia.net/dota2/Dota_Major_Championships

There are games visible in the app that are not mentioned on your list yet I can't ben on them. Nice try though