It’s important to realise that the buyer might have their reasons for doing this. I see this as being caused by Fiverr’s “last-minute” reminder to buyers when an order is about to autocomplete. This tells them that changes can’t be requested after that time.
Given that it’s thanksgiving time in the US, if the client is from there I’d probably cut them a bit of slack rather than assuming the worst of them to be honest.
Yes, none of these things are your issue but at the same time, I sometimes see these as being part and parcel of dealing with the general public. Decide how you want to deal with it based on your feeling about the client but my suggestion would be to wait til tomorrow evening, US time and then redeliver with a message saying that you are redelivering as you haven’t heard anything from them.
I’ve done this on a number of occasions and it sometimes just gets accepted or autocompletes - it may also give them a kick in the hass (type of avocado) to get a move on with their request.