Unfortunately, it is in many places do to a plethora of shipping issues. Something as sellers that we need to take in account when choosing to sell right now.
So many of us, are able to wade through these problems with buyers that are understanding. With that said many buyers are anxious, and I'm sure their finances are a main reason for their anxiety. Monies are tight for many of us.
I truly believe that USPS are doing their very best with the tools and people that they have.
If it is not working with the plethora of shipping issues we are encountering, maybe put your listings on vacation for a bit. Just a thought.
Crazy times on so many fronts. Stay safe be safe and weigh what works for you personally.
Best to you moving forward,
Grandma.