Watchface: Data Lover

It doesn't sound as data lover, most likely you are using another watch face

To make data lover your active watch face do an uninstall and reinstall of data lover.. the uninstall part is important 

Great thanks

I like

Hello is there a 24h mode / military time 

yes, change 12/24hr time in your watch system settings (on most watches you get there by long press of the middle left button) 

I love this! Today and after years, i tried the stress and vo2max display, but it's empty. 

Here is a picture of this: https://ibb.co/nMLkGk9M

Vo2 max and stress is displayed in my garmin app, but not on the watch.  any suggestions? 

your app may be out of sync. can you try to uninstall and reinstall data lover?  the uninstall is important.

in case the problem persists let me know what your watch type is so that i can have a look.