It was finally system time settings, somehow it changed from 24h to 12h even if I did not change it. Now DigitStorm watch face shows 24h format on Fenix 7x
Thanks for building this watchface. It is my first choice on Forerunner 955. Now I switch to Enduro3, however the watchface is no longer available on Enduro 3, could you help to make it work on Enduro 3?