We allow two different types of International shipping: International 1st-Class Large Envelope, and Priority International. However, the International 1st-Class Envelope does not work with the module. It hasn't been working for a few months, and we just upgraded to the newest module and it still doesn't work. The only 1st-Class option that works is 1st-Class Package Intl Service which is a higher rate than the envelope.

Anyone know how to fix this?