The Crypto tab is paying but the only problem is they are cheating and you earn less compared to mining with your own.
And I would like to add you need hundreds of referrals before you can withdraw a decent amount or reach the payout threshold if you are going to do it alone it will take you years to cash out
They have ten-level referrals so they motivate their members to promote the site without the cost of advertising themselves.
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Referral is common and mostly level 1 would really be the biggest percentage since it would poke up people or user interest on spreading those links and this is how a common scam works and we've seen tons of it usually involving ponzi scheme and hypes and this one is been using in the path of mining to make it at least believable.
You're assumptions were true that mining btc does need ASIC mining and that cant be possible if it would be done via mobile.Its just an app that shows mining stats or whatsoever.
Dont easily believe into those claims that earning bitcoin through mobile is possible.Its just a pure scam and better to avoid it right away.