How to change the order of cards in a stack?
It's very easy to move cards with the mouse to change the order of cards in your stack - just click and drag to move them. Just make sure you have the setting 'Tablet/Mobile Mode (use touch to scroll)' set to OFF so that you do actually allow the mouse or your finger to drag a card (and not scroll).
You can also use the menu of the card in card thumbnail view to move cards up or down
Furthermore you can use the dropdown menu at the top of the thumnbail view to sort cards