Have a look at the metrics on sprintr:
If you want to know more statistics, you can setup a google analytics account and download and install the https://marketplace.mendix.com/link/component/105/Mendix/Google-Analytics
I can not see anything from Metrics.Is it because my system has too little access?
check this in the learning path: https://academy.mendix.com/link/modules/63/lectures/424/4.2-Metrics.