What is the minimum and maximum investment that's users can have?
What do you mean by we can open up to 20 investment ? Is there a maximum limit for every 1 investment ?
And the return are you giving it daily ? Since you said that we can cancel it anytime.
Minimum 0.001 and no maximum currently. The 20 investments means you can open up to 20 investment positions. Say you invested 1 btc and sometime later you want invest another 1 btc, you can open a second position again.
For the reward, it’s calculated instantly. If you invested and someone lose a bet the next second, you earn profit for your investment and you can withdraw whenever you want.