I have recently run into the same problem. It is possible to meet the
standards as set in the eBay Standard Envelope guidelines page but
apparently not meet the USPS guidelines as @no_zero369 explained very
well. Here is the link for the Standard Env...
Same problem here. Thank you for posting this. I am still somewhat new
to selling on Ebay and thought I was going to have to go through my
entire active selling list and change shipping details.
