I dont think im the one suffering from this.

Look, credits are everywhere from jackpot to campaign. And thats pretty good, but somhow useless, getting only 2000 credits per stage in campaign doesnt add up because campaign mean genes stages level up by 1-5 every chapter
and the evolution center costs more than 10k credits. Also, even mean genes produce credits, it is still not enough to atleast upgrade the E.C once a everyday.
Others progress slow because of this except the rich and the lucky.
So my suggestion is that you lower the price of evolution center.