Mapbox Layer on Mapping Module Overlay

My team and I would like to add a QDS overlay over a map in the Mapping module (v1.5.0) on Omeka S 3.2.1.
We have created the overlay here on Mapbox:

We have then tried to put into the WMS overlay module with the URL
and adding the name of the layer (title) QDS_Test. But nothing is coming up. We are not sure if this is possible at all, and if it is just a matter of selecting the right Layer/Style or something with our link that would need to be tweaked.

Many thanks,