No Metrics in Application Insights

I have a web app hosted in Azure. I created function apps and app service with application insights enabled on each resource. As you can see from the screenshot of my app service, there is a metric data:

But when I checked its application insights, there are no data in the metrics:

I also checked traces from the logs and there are data being logged.

I would like to know why data is not reflected on the application insights. The instrumentation key are matched with the app settings of function app/app service. Hope you can help me on this issue. Thanks!