Not sure how you installed the camera.
But if you want to use mydlink service, you need to run the set up wizard downloaded from support.dlink.com or mydlink.com/support and register to the email.
Then you should be able to log in from android app or access from the computer even away from home.
If you can't see live view on mydlink.com, you may go to Java's website to verify Java and active Java on your computer.