Hi Rich,

There was no update to this app in the last few months and I can confirm that routing functionality was working when released.
When I checked, the website that provided routing data have implemented a lot of changes lately so I will need to adapt the app to that now since I depend on routing data from them as they do not share routing data.

Chris had already reported the issue and has raised a bug
(bug link)

Will target to update the app by the weekend and provide a release.

thanks for reporting.