They are paying because they want to spread awareness of this amazing project of ETN, They have a great dev team and everyone is doing their job perfectly. Keep mining ETN guys, it will give you good results at the end of this year 
Oh, now i see. They were just paying you because you ran their simulator but in reality it doesn't really give you any ETN because they provide the ETN for you. They were just more likely a campaign but on mobile phone while using their mining simulator. So, what if they stop doing that like giving you ETN and they have decided to stopped giving you ETN in the future because they got what they want. I don't know if it is worth it to do that, but it's just like you are watching an ads for every game to get the money. Don't play a game here Mr. IOST by spreading FUD, they are paying means everyone is getting ETN, they will continue it because Mobile Miner users are increasing day by day, they have crossed 80K+ members in a short span of time. So better don't say anything negative. We aren't saying anything wrong about any other token here. So if you can not help than you must not say anything bad also. I hope you understand. If you want ETN than just go for it
They are giving ETN without any task my friend, all for free. They are not saying to take part in any airdrop or ICO or any bounty like others. You just have to install this app in your phone and thats it my friend.