UPS is having problems. I've had 2-3 deliveries that said they were out for delivery only to get a notice later in the day that the package is still at a distribution center. I have a pair of tires that were supposed to be here Friday that now are supposed to be delivered tomorrow. All I can say is try to be patient. They're working as fast as they possibly can right now and mistakes do happen.
To add another slant, yesterday, I sheared the nylon starter pawl (who knew the the plastic wasn't up to 95ºF ambient temperatures). At 1:14PM, I placed an order with Amazon for five replacement pawls. They said "next day delivery". "Yeah, right", I thought, "I'll be lucky to get them by next Tuesday". Well, 24 hours and 8 minutes later, our mailman deposited them in our mailbox. +1 for Amazon and USPS!
My own take, both from all these stories and from my own experience, is that the Wuhan virus, the increased level of online ordering, and very occasionally the "civil unrest," have not so much caused deliveries to be universally slowed down, as they have of throwing a large random factor into the equation. Luckily, none of the items I've ordered have been time critical. But I can appreciate how disruptive this must be to folks whose livelihood depends on reliable delivery.
Do we all remember how big an innovation JIT (Just In Time) logistics became not that many years ago?