Postman Interceptor not Intercepting

[sanjogpandasp]

I have setup postman interceptor from the postman mac app. My android app is running on genymotion. I have setup to the instruction as here .

I am not able to intercept the request from the app. But I am able to intercept from the web browser after accepting the certificate popup.

I suspect that I have to export postman's certificate and install in my genymotion device as postman is acting like a proxy for the app traffic.
But I could not find how to do it.

Please help with the issue.