Typically you check in during the new day, the daily rewards screen shows what prize you have won for that day, you 'X' out of the screen and move on.
I could be mistaken about the week past but it felt as if I had not been getting the daily rewards. Nevertheless, for the past two days I get the daily rewards screen and X out to play a mission. When I return the daily reward screen reappears, and reappears thereafter. This has happened multiple times starting yesterday and continuing today.