Play games
Choose the game that interests you and play itfor free.
Complete the tasks
Every game has some tasks for which you will receive Soul Gems.
Receive rewards
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
So, I have a Huawei phone and if I want to do a contract I get directed to the AppGallery (which then tells me that the game is unavailable in my region) instead of PlayStore. Is there a way to change the default store to PlayStore? Or how does the proof system even work?