facing the same problemif you got any solution please let me know
Eventually, it died on me. Looking now at iWatch or Wristband. They say that a third-party app can link Wristband 4 with STRAVA. My best advise, mate — let it go.
See my post up above. That fix worked for me. I eventually ended up ditching the watch for a Galaxy Watch, though. Hope you have better luck than I did!