You lend GRX and you get 1.1% of investment/day. You earn 1.1% in what  in GRX, usd?, btc? eth?
And they earn cash in what way? Using some trading bots?
Where are those bots operating, did anyone see them working?

Is is something like bitconnect scam? Anything promising 1% daily investment dosn't seem legit. What if trading bots lose 99% of my GRX tokens? Can they lose it?