I'm posting this in case someone is having the same issue I did, until I finally put 2 and 2 together last night. I had disconnected my GenieGo, and while the Mobile DVR app was working fine on my Android devices, the GenieGo apps on my laptop and Windows tablet were not able to find my DVRs, so I deleted them. Then I saw that the GenieGo app was working on Windows devices, so I decided to reinstall the GenieGo app, and see if it worked. I had the GenieGoSetup file in my download file from when I originally installed it. Where I had problems was it kept asking me for my GenieGo serial number, which of course now is disconnected. So I tried my HR44 SN, which did not work. Now the interesting thing, to me, was that when I put in the HR44 ID # the app accepted it, but then it couldn't fine any registered DVRs. After playing around with this for a while, trying various numbers, I tried my plan B. I downloaded the GenieGoSetup file from this link.
https://www.att.com/esupport/article.html#!/directv/KM1040967
I then installed this version of the GenieGo app, and it immediately found my HR44, and downloaded my playlist. I downloaded a few samples from my playlist, and PQ was excellent.
Unfortunately, while the GenieGo app does the DVR playlist and downloading well, you cannot access local channels through it or through the Web Browser Player. Sports are not an issue, because FoxSportsGo works fine for the RSNs. I still have BlueStacks installed, and can access the local channels the Android app there. Two problems with that method, which are somewhat related. First, with both the Bluestacks/Android app and the GenieGo app installed, it uses 2 of the allowable 5 devices on each device where I have them installed. Bluestacks spoofs an Android device to install the Android app. GenieGo recognizes a Windows device. Second, the Android app is on the Bluestacks network, so you are never on your "home" network", so you cannot download programs from your DVR. Unless I'm missing a way to change the Bluestacks settings.
So, my main point is, if you are running into the same problem I was trying to get the GenieGo app connected on a Windows device, make sure you have the latest version of the GenieGo app on your windows device.