I stopped receiving points on Slidejoy

I installed the app around 20 days ago, I was told that I would be able to earn 2-5$ a month. All I got was 310 points: 200 points sign up bonus+110 points that I earned mostly from scratch. The app displays ads on my lock screen every day and I haven't received one single point for a long time. 1000 points=1$ so 310 points is absolutely nothing. Did anyone else have this issue?