Does anyone know how consistently the offers alerts are?

yesterday, put in an order at Whole Foods (via Amazon) with my Freedom Flex, which I definitely wouldn’t normally use for groceries but had the 20% off (up to $12) Whole Foods offer on it. Typically, I get an email right after swiping/purchasing online (and never get a push notification, even though I’ve signed up for that, too), but didn’t get anything this time. I know it usually takes a few days to get one of the ‘congrats, you’ve redeemed’ emails.

For context, we used my wife’s UA card last week the same way, which also had the offer on it, and she got the regular email notification pretty much as soon as she confirmed the order.

So anyone notice if they sometimes don’t get the immediate email noting they’ve used on of their offers? Wondering if I should be concerned that this won’t go through.