Quote Originally Posted by Ajeh View Post
I am wondering if the issue is the container for First Class ...

I get from the USPS shipping module:


Notice the Package is $9.15 and the Envelope is $4.35 ...

Going to the USPS site, I get the same quotes on Package and Envelope ...

Could this be the issue that you are experiencing?
You hit the nail on the head. We had it set as "package" and not "envelope". Thanks so much for your help!