By address, do you mean location? Can you please share a screenshot of what you are talking about?
You need to setup a reverse geocoder service to get the address, look: https://www.traccar.org/reverse-geocoding/
@Maurilio, talking of which, how comes I don't see the longitude and latitude shown on my map? What do I need to do?
You need to enable it in settings.
Under which option?
If you want to show it in the popup, then the option is called "popup info".
it just show longtitude and latitude. it does not show the address.for example name of street.
You need to enable reverse geocoding.
the traccar just show longtitude and latitude but it does not show the address