If GPS data is available for an asset, but the asset is not showing on the Calculus Map, check if the widget is in Show Assets mode.
To change the map mode, click on the Eye icon, in the top-right corner, and switch from Track and Trace mode to Show Assets mode.
To change it permanently, you can set the default map mode in the widget configuration panel.
Read the following article on how to do this: Calculus Map widget.