First go to your mapbox account, access studio and find style URL / access token
Next, go to Listeo Core and paste “Access token” into “MapBox Access Token” field.
Then extract username and token from “Style URL” :
mapbox://styles/purethemes/cm046dmnx00gm01ph73rr5rp5
and paste into following URL which should be applied into “MapBox Studio Style URL” field.
https://api.mapbox.com/styles/v1/USERNAME/TOKEN/tiles/{z}/{x}/{y}@2x?access_token=
an example or correct URL:
https://api.mapbox.com/styles/v1/purethemes/cm046dmnx00gm01ph73rr5rp5/tiles/{z}/{x}/{y}@2x?access_token=