I got your help ticket which had the video attached, and I think that helps.
After you grade an answer, you’ve moved on to the next card, so the shortcut i for “Card Info” opens the info for that next card. [You can see that it’s “Current Card (Study)” at the top of the window.]
To see what grade you just entered, you need to look at “Previous Card Info.” Check the More menu for what the shortcut is for that on a Mac (I only know that it’s Ctrl Alt i on Windows).