Every time it happens I clear the data on Google in the settings to bring it back. Then you have to choose an an assistant again each time. But I have learned not to swipe away the score while the game is in progress to keep from doing it. Also check to see if Web to App activity is on in search history in the settings. Mine never worked at the beginning so I turned it on and rebooted my phone.
The only thing else I did was made Samsung internet my default. I heard most the features work better with it and cleared the data again. My phone didn't work from the begging. Until I did all these things.
