Live View - Works on Cell Data, Not Wifi

Hi - I have a Ring Video Doorbell 2 and a Ring Stick Up Cam (Wired) . While I'm at work (and where I have full wifi service on my phone), when I try to access Live View for both, the app immediately says "Couldn't open Live View. Please try again." However, when I go outside (I have bad data service inside in my office) and turn off wifi, I see Live View fine. How come Live View won't work when I'm on wifi in my office? Thanks very much for your help