Currently, if you are in the middle of a rated set and your opponent takes longer than ~1 minute to start the next game, a message pops up giving you the option to either
-force them to resign -resign yourself -cancel the set
Frustratingly, this message doesn't give you the option to temporarily defer and chat with your opponent (for me at least on Windows 10 & Chrome, it's a popup window that blocks access to my other windows). I would really like to have this option before I choose one of the more extreme options given to me.
It's no use going back to yesterday, because I was a different person then.