No Live View

I have a strange issue. I cannot get Live video while away from home. I am NOT connected to any wifi at all while away. When I touch the Live feed video, it says "Activating Device". It spins for about 15 seconds and says "Live view ended" "Reconnect". Now, I never get to see the live feed BUT I can go see it in my "Event History". This kinda defeats the purpose of having a security camera if I can't talk or sound an alarm if an intruder is on my property. It should work correctly. I have spent many days with Ring support and not had any luck so frustration is setting in. I bought 2 Floodlight Cams and ordered the Ring Doorbell Pro and I want them to work as they should. That's not happening. I will mention that I have uninstalled and reinstalled the app twice. That didn't work. When I am home and connected to my Wifi, the live feed works but when I disconnect from wifi, it does NOT. I work in a building that has a repeater for our cellular service and I always have full bars. Reception is perfect. I uninstalled my mobile Anit-virus as I read that Ring says AVG could affect performance. That didn't help either. I am at a loss. I don't want to take these products back as I think they could be good if not great when working properly. Any advice or suggestions?