Hi Gina,
USPS can be a problem at times, but I'm sure I know what's going on this time. A lot of postal employee's are probably out with COVID-19 or under investigation. I work at big box store. I didn't wait for management to tell me to put on a mask, I had mine on early and advised others to do the same but nobody listens. One-by-one they started dropping like flies. We had to bring in employees from out-of-town just to keep the store open.
My Regal Shield arrived today and he don't look so good but I think he will pull through. He perked up a little since arrival. See before and after pics, bye.