When using easyLabel for the fist time, please ensure that the Shopify location is set and ready.
easyLabel is specifically designed to generate shipping labels for shipments from Japan to destinations worldwide. Therefore, your store location settings should be set to Japan.
The address that will be filled within the label itself is the store address that users set within the easyLabel app, so please make sure this is filled out as well.
Do you have any other questions?