So I am correcting your graph.
Start date 3rd September
initial wallet balance :
7.615mXBT

After 30 days : new balance is 9.298mXBT = +22.1%
Howvever, after fees (30% of profit) the User balance should be : 8.793mxBT

Real ROI for 1st month is : +15.5%

Start of 4th october with new balance : 8.793mXBT

After 1 month, your report says that the gross increase is 7.2%
which mean that the new balance (from 8.793) would be 9.43mXBT
And after 30% fees on the profit the effective balance of the user would be : 9.24mXBT
ANd the real ROI for the 2nd month  is +5.1%
The Real ROI for the 2 months altogether is (7.615 -> 9.24 = +21%)

After 1 more month (up to 2nd of december)
Your stats says that the increase is +20.1% (9.971->11.974)
Which mean that from the effective balance of 9.24mXBT the new user balance is 11.094mXBT
With the 30% profit deducted the balance is : 10.757mXBT


The total ROI for the 3 months experiement is : (7.615 - >  10.757  =  +41.3%)

This is still fantastic but slightly different than the +57.2% advertised.

I have omitted VPS cost of $10/ month that have to come out of the user's balance.
Some users have the VPS for free, and I am being told than in a few weeks the VPS will be free for all.


+ 41.3% in 3 months is a monstrous result !!!!  Well done !!