I had the same issue... I changed routers and the problem went away. Another option is to try resetting your router to factory defaults.
The app keeps "disconnecting" while playing

will you guys fix damn problem or not ?? some months ago it was working flawlessly. Now i am getting constant disconnects and it makes my game lost in like 10 seconds or some bs. Nothing changed on my side.
Same issue here. Haven't been able to find a game in over 2 hours now. On Windows using Chrome as browser.

CHESS.COM VOUS PUEZ LA [removed -- MS] AVEC VOS SERVEUR EN POLYSTYRÈNE!
SANS RIRE J'AI DU PERDRE AU MOINS 200 ÉLO AVEC LES DÉCONNEXION! BOUGEZ VOUS l[removed]!

CHESS.COM VOUS PUEZ LA [removed -- MS] AVEC VOS SERVEUR EN POLYSTYRÈNE!
SANS RIRE J'AI DU PERDRE AU MOINS 200 ÉLO AVEC LES DÉCONNEXION! BOUGEZ VOUS l[removed]!
You might check out the following to minimize connection issues
https://support.chess.com/en/articles/8652402-how-can-i-optimize-my-online-chess-performance
https://support.chess.com/en/articles/8584209-how-do-i-fix-my-disconnect-lag-issues
I keep getting connection issue in each game even though my internet speed is 100mbps and all other apps works perfectly fine. I lost so many games just because of connecting issue.