offer wall, soul gems and multiple devices

first thing, im sure that gamehag is 100% legit. i think there going about it all wrong though. 20 times in a single day per device i get a notification about come get something free its definitely not free. and whats up with the offer wall ive completed 3 task or contracts only got credit for one so far witch kinda puts me in bad space bc i got two more about to complete that ive spent money on. so does it matter that im using andriod pc amd iso to sign in and do task? and really is vip worth it? i payed the 4 bucks and so far im not impressed