Message "Inakt. Status Gel"

Hi,

i have a Fenix 5 Plus, SW 5.10, language German, Fitness tracking activated.

Sometimes, I can not trigger it, I get the message "Inakt. status gel". It shows at the top of the display, like the "Los" (engl. "move"?) for about 1 sec.
I can't find any description of what this means in the forum, handbook, Google.

BR
Florian