Phantom Pro 4 plus Connection problems

I haven’t used my controller with the big screen for some time as I have been flying fp with the regular controller with goggles. Cannot get the DroneVR to boot up so I thought I would connect my other controller with the built in screen. When I try to log in, I am repeatedly told that I have no Internet connection even though I do. So, several questions, are any of you experts on the DroneVR app, and if not what can I do to connect my phontom 4 pro+ controller? Thanks so much! I have been fighting this for several days. This all started when I was downloading the sd card and the battery on drone went dead. All these problems showed up after.