There are a large number of trackers that work in interval mode - they send points once in a certain period of time.
To save the device battery and traffic, this period can be large (some devices can transmit data once a day, for example, asset trackers for cargo transportation).
However, such data does not allow building accurate tracks on the map, and if the data transmission interval will exceed the idle time of the "parking" state, tracks will not be displayed at all and the device will always have the "Parked" status.
If you need to show the movement of the device as a line on the map in any case, then disable the option "No split by parking" in the Tracks settings. In this case, all points transmitted by the tracker during the specified time period will be shown as one trip.