In order to get notifications, you'll need to be watching or a member of a card: https://help.trello.com/article/799-watching-cards-lists-and-boards
Can you test this by creating a new card, watching it, then setting a due date for it to 24 hours and 5 minutes from now. In about 5 minutes you should receive a notification for that card's due date.
Give that a try and let me know if that helps!
If you had to thrive a new habit during a lockdown, what would it be? Trello
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