In a Corolla?? Those things are tanks. Not saying you should treat it as such, but they’re very dependable. No need to worry.

It may very well be he didn’t change the oil type on the sticker after inputing mileage. So correct oil, but moving too fast to change the oil type on your sticker. Can just call and ask. My dealer orders special bc we don’t carry it. Should be an easy thing to confirm