they don't really work for me either, neither do desktop tasks. i don't know why. is it because i'm from argentina?
I get different taskson computer from mobile but on the same game that gives a different amount of soul gems like raid shadow legends
in 3 steps
Choose the game that interests you and play itfor free.
Every game has some quests for which you will receive Soul Gems.
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
You know that on Gamehag you can get real rewards for free, right? Join us, complete walkthrough and get your chest!
I have tried doing them many times, because the amount of SG you get from them is pretty nice, but i've never received anything because either i couldn't finish it or it just didn't work.