https://www.chess.com/blog/News/how-to-adjust-your-live-chess-connection
and
https://support.chess.com/customer/en/portal/articles/1444918-my-internet-connection-is-fine---why-am-i-getting-disconnects-
The Live server process is separate from the rest of the site. If you are on the actual app, just using tactics doesn't mean that you have a connection the chess.com servers, since some tactics are cached (though it should then show as unrated if that is the case).
I am experiencing a connection problem specific to the ongoing games on chess.com. I receive a message that i have lost the internet connection. But all other apps work and so do all other chess.com apps such as tactics. The only app that I cannot connect to is the going game. I can only reconnect after the game ends. As anyone else experienced this problem?