Hi Lillafiket
The clock flashes sometimes if the connection to the server has been interrupted. Generally the connection can be reestablished and the game can continue. It may also happen if one player is taking a large amount of time in a quick game as it could be one player or the other has abandoned the game! Hope that helps!
thank you it helps
This blinking issue is fuzzy. Not always really logical. I suspect server problems since my net connection is perfect, but I loose. Also I can't understand why I loose, if it is opponents turn to move?
I just had the same issue. While my Internet connection was still good, I saw the clock flashing, and it resulted in my loss 
What is the recommended way to handle blinking clock - should I refresh my browser?
same here, but now happening much more often !
Your internet connection must be unstable then
"What is the recommended way to handle blinking clock - should I refresh my browser?"
This is helping usually for me.
https://support.chess.com/article/213-how-do-i-fix-my-disconnect-lag-issues
Hey,
This may help,
Thanks
Hi, i noticed sometimes when i play that the clock that counts down starts flashing.
I was wondering why that is as idon't know if it's im taking (or the other player is taking) too long or what that means.
I've seen it flash sometimes when it's my turn and sometimes when it's the opponents turn.
thank you kindly