Okay that makes sense. But, for example, this morning I was doing my cards
and there were 3 cards that I added last Friday that I had never seen until
today. One was from a pre-made deck and the other 2 were ones that I made
myself. All of them were "Basic" cards. Do you know why these cards may
have been delayed?
Assuming your new cards/day setting is high enough and the cards weren't unsuspended by you, I'm afraid I'm not sure. I suggest keeping an eye out to see if it happens again, and trying to spot a pattern if it does.