I have seen games do that on the website. The client gets in a hung or partially disconnected state but doesn't recognize that. On the website, refreshing the page is often enough to kick things back into gear.
I don't think the app has a way to force the freconnection like that.
You might open a ticket about it.
https://support.chess.com/customer/portal/emails/new
Can you tell from your server log what is going wrong and let me know what if anything I need to do to fix it.
Thanks.