unable to translate

Every rule has the Title field to provide a delivery option title you need.

@dangoodman Do you mean this? https://www.screencast.com/t/xBRfLvfoNZ2

This text can’t be found in WPML String Translation. https://www.screencast.com/t/KwJfHv9OVLB

Could you elaborate how to show different text under different languages?

Right, the Title field.

You have to trigger the delivery option to appear on the front end before it gets registered with WPML String Translation.

For more details on WPML, it’d be better to reach their support.