time out



You could have been connected fine to wifi but disconnected from the Live server process. It happens sometimes. If you are on the website, refreshing in such cases will often force the reconnect. Or read the following:
https://support.chess.com/customer/en/portal/articles/1444918-my-internet-connection-is-fine---why-am-i-getting-disconnects-
I'm not as familiar if you are on the app on the best way to fix.