Is the map not showing at all, or is it showing a gray map with markers?

If the map is not showing at all, you need to check why the display source is not visible.
The most common problem here is the wrong scene in the build.

If you have a gray map, then this is a problem of loading tiles.
Usually this is a problem with access to the Internet or tile service on the device.
You need to check why the application does not have access to the Internet or tile service and fix the problem.

This is my first project (just an internal mockup) using this asset.
All looks fine in the editor and in playmode.

However, when i build the runtime the map isnt shown.

Any ideas on how to solve this?

Thanks

Jack