Yi Camera not Connecting to Google Hub

I have a Google Hub and I have found where I can sign into the Yi Camera and I do. But when I go to my Google Hub to tell it to view a camera it tells me that it can’t be displayed. I have unlinked and relinked in the Google Home several times but still not working. It worked at one time and it stopped and I don’t understand why. I have the Alexa which it works on but I’m more of a Google fan. How can I fix this. Thanks