Activate xcam3 without the app

Hello, I am an xfinity customer, but currently do not have the service. A while ago, I purchased the xcam3 while I was under the service, and am currently looking for a way to activate the camera without using the app. Is there any way to setup viewing on devices without the app? I read a thread that explained that I needed to send a PM to an agent, but am not clear on how to do so/what it would entail.