Why I am not earning anything from newly activated slots?
First of all you should know that Forsage is neither an investment platform nor a level based scheme. In Forsage, all of your activated slots work simultaneously at the same time.
When someone from your downline activates the next slot you'll receive the payment (if you have that slot already activated). The participants that you refer start with minimum 1 slot in each matrix hence they take place in your first slot, after they upgrade to higher slots the income is received by you.