To enable the Java Plug-in so you can view your Live Video Stream in Alarm.com follow the steps below:
First go to the upper left of your screen and select Safari. Then go to preferences.
You will see this tab open up. Go to Security.
Select : "Internet plug-ins: Allow Plug-ins". Then go to "Website Settings".
Make sure that Alarm.com is allowed.
You're done! You will now be able to stream your live video.