"Sending software update" each time I start activity

When I start an activity on my Fenix 7X Solar, the Garmin Explore app on my Android always shows the notification "Sending software update to fenix 7X". It is stuck, there is no progress. When I end the activity, this notification disappears. If I go to Explore and check for software updates, there are none. What is happening here?

How can I get rid of this? Is my phone actually trying to send an update?