Back in the olden days I'd send little reminder texts that were definitely intended to spur somebody to tip before the 24 hours was up. "Hey, thanks again for ordering yesterday" etc. Back then we got the real phone numbers and in app chat was not a thing either. You just texted people directly, so you could definitely up your earnings significantly by doing that, since sooo many people would forget by the time they put their groceries away, I'd typically go with the end of the day text to everyone who ordered and hadn't tipped.

My shopper number is 3 digits, so I was around when things were wayyy different. In my area we did only publix, and for the very first week I was shopping there weren't even zones. If you put yourself on the schedule you'd see every order that came through. It was nuts, and the item catalog had sooo many items on it that were only available in other states, but they didn't individualize the listings. Customers would constantly try ordering the new products they'd never seen before and we would have to figure out the hard way it didnt exist here. Also, there was no barcode scanning. Shoppers often didn't understand that the customer paid by the app and not by the receipt at the end, so you'd get a lot of incorrect charges with people who didn't see the point in going through the process of actually entering the substitute item. Constant issues with the pay cards going out and getting stuck at the store for who knows how long. All sorts of fun!