chess.com timezone

https://support.chess.com/article/1244-my-daily-amount-of-puzzles-didnt-reset-whats-going-on

Notmtwain, thanks for your reply! I did what the article says in my account on the website, hope it will work in the app too, because I didn't find such settings in the application.  

Sorry to bump (if that's actually a thing here).
I've always had issues with chess.com dates/time zones. There's always an inconsistency across event/game dates (for instance, right now the Pia/Levy event lists the games completed today as having been completed yesterday) and puzzle dates (for instance, my puzzle stats are showing that I've completed 4 puzzles today, when I haven't done any since yesterday). I've always had my time zone (UTC -4, New York) correctly set on the website, but there isn't a place to do so on the mobile app (presumably because it goes by the system settings).