Sonarqube Dashboard is not showing data for one week ago, it's only showing for 4 days


I am exporting SonarQube metrics to Prometheus. When I create dashboards on Grafana, the data are correct and working fine. But it’s showing for only a few days.

I just use this query, “sonarqube_coverage,” in time-series graphs to get the coverage for all projects. coverage are correct, but I can’t get data from one week ago to one month ago. It’s only showing for 4 days ago

this is the image for output - File sharing and storage made simple