The map is usually missing when GPS is not enabled, or when you do not get the lock on the GPS satellites, which can happen in bad conditions (high-rise buildings, dense vegetation, watch under the water surface,...) , or when the ephemeris file data (EPO or CPE) is expired (What Is EPO or CPE on a Garmin Product? | Garmin Customer Support).
If the watch was recently updated, make sure to reboot it first.
The automatic Name of the activity has changed to a Name without the Place. This Indicates that the activity is considered without GPS. Bit the System knows the Level Ober the sea and calculates the gain of hight. Not yet a Solution found
