I found it. I had to click a button to claim the win. Why doesn’t it automatically flag?
I thought it should automatically claim the win, maybe it is not working or is turned off. The option is under Home >> Settings (on the main site menu), then go to "Daily Chess". There is an option "Automatically claim victory when time runs out!" which may be turned off.
Those instructions are using the web site. I don't know if they can be changed using the mobile app as I only use the web site myself.
I have a game going right now where my opponent has gone on vacation three times during the game. I play one day games, not 2-4 day games. Vacation is being used as a way to extend and stall games. This is NOT the intended use for vacation. Vacation should only be allowed one time per game, and then it should be stalling. Just my opinion.
Premium members automatically get placed on vacation when low on time in one or more of their daily games, with the exception of games in no-vacation tournaments. So, other than just making moves before getting too low on time, premium members can't turn that off.
It's part of how the system works, and unless they are only doing it to prolong a hopelessly lost game, there's nothing to do but wait for a move to be made.