Unable to see live view without clicking on the camera view

I just installed my cameras and I’m unable to view any of the live video. All I see is gray screens. The only way I can see the live video is if I click on the video recorder on the left bottom corner of the camera view. Has anyone encountered this issue? I tried installing it again and didn’t work. I only connected one camera for now since it was working

Press the camera icon, then read the documentation.