Roku TV Camera app can't view live feed

Ok so I bought cameras & set them up at my elderly dad's house so I could keep an eye on him from my home or frankly anywhere I may be. It works great on my phone but i can't watch him from my roku tv that I have at home. By the way both tvs & cameras are all on the same roku account. That was the point of doing all this so I could watch him while I wasn't at his house. I can view recordings but not live video. How can I fix this issue or did I just waist all this money for nothing? Cameras at his house & 1 tv, the other roku tv is at my house a half mile away. It was my understanding that as long as everything was on the roku account that I should be able to access live video from any location as long as i was using a roku device.  Please help.