Photon Engine Version Update Shows No Games Available

Very strange problem. I have an application hosted with multiplayer connectivity. I recently upgraded to Unity 2017 from Unity 5.5 and with that I upgraded Photon from. As I tested my new 2017 build I realized that my new build could not find any games (PhotonNetwork.GetRoomList() always == 0), even though I had games open with production clients of my game. I opened the logs and confirmed that the same CloudRegionCode andGameVersion were used.

I tested 2 old build clients and they can connect, I tested 2 new build clients and they can connect. but the old clients always report 0 games to join when I have created a game on the new build and vice versa.

Has anyone ever experienced this? I am not sure what could be going wrong. The only variable I can isolate is the Photon Engine Asset Version

Old Unity Version: 5.5.5f1
Old Photon Asset Version: v1.84.1

New Unity Version: 2017.2.0f3
New Photon Asset Version: v1.88

Thanks,
Mitch