Im really having a tough time trying to figure out why I am getting a callback to:
OnAgentLoggedOn and OnAgentLoggedOff

But I never get the events for:
OnAgentReady, NotReady, and PostWork

The event handlers were added, and for the event filter I just use the default constructor with true so all events should be on (right?)

I assume I have the necessary monitor running since I got the login and out events.

What do I need to double check to start getting notified of state changes?

Im using version 6.3.3 of the .NET SDK.

Thank you in advance.

Can you point to where in the public documentation for the SDK you see that the events you are referring to will be provided through the SDK? OnAgentReady, NotReady, and PostWork

https://www.devconnectprogram.com/site/global/products_resources/avaya_aura_application_enablement_services/releases/6_3_3/index.gsp#tabs-product-downld-7

Sorry to be the bearer of bad news, but I can assure you that they are proprietary and are not delivered to third party applications through the SDK.