Propellerads honestly pays income?

Question

Monetization

Hello, write your opinion, who faced such a problem.
I have been working with PropellerAds for a long time (about 2 years), I used to get a good income, now this is not at all the case.
Look at the statistics

. There is ru traffic, there is American traffic. But, when traffic increases in other advertising services, incomes grow, and they keep it approximately stable, it seems that I have attached some amount of income, and it will not rise higher. CR% decreases every day. This is fine???