How do we get ShipStation to include FedEx One Rate Large and Extra Large boxes? With the new rates that started today May 2nd, 2022 you can ship a Large box for $19.95 and a Extra Large Box $27.50 (2day anywhere including Alaska and Hawaii) for a flat rate.
ShipStation includes a FedEx large and extra large box but they are not the 'ONE RATE" option.
