as ATB Coin say:
Starting date of Mining 14.09.2017 - up to now 13 days :-)
13 x 576 =  7488 distrobutions of new coins (the number of generated coins depend from the investement of choisen address)

1. number of investitiors about 9000 (probably part of them already gone) :-)))
2. not of all investitors mine :-)))
3 let We assume about 4500 miners :-)))))  probably no more that 2000 but let we assume 4500

if  method of chose of addresss is random (it mean fair play) :-) every miner have to be chousen at least 1 time up to now      

I confirm again:
I mine according instruction from 17.09.2017 (10 days up to now)
I do not receive any mined coins  

ATB Coin, what is wrong?
Implementation of Your good idea ?
Why mining do not work in fair play method ?
You tell as that You do not know the number of miners , sorry I can accept this  
if You realy want to be fair with Your miners (who pay with electricity and hw resorses existing of Your blockchain :-) ) please make public:
every choisen address during this 13 days, let every one can see how many times specific addresses are chosen.....

Hello ATB Coin report of getstackinginfo comand show only that the wallet is in stacking mode nothing else,
this is not enought :-)

You tell as that currently new block generates on every 2,5 minutes :-) (is this mean that on every 2.5 minutes some miner receive coins for mining) ?
24 hours x 60 minutes = 1440 blocks
1440 /2.5 = 576 blocks per 24 hours
Mining from 15.09.2017  = about 11 days mining.
11 x 576 blocks = 6336 blocks if this is equal to new mined coins
it is mean that 6336 times some "random" address is hit ant it receive coins
Your investors are : about 9000 You show this number in the site :-)