Hi @Linouch . What phone are you using?
Try all the suggestions in THIS Help Article on syncing problems
Helen | Western Australia
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The S7 should work, though I used to have one and always found it a bit difficult as far as syncing went. Usually I managed, sometimes having to go the Help Article I Linked above. I have since changed to the S8 and that is heaps better. So although your phone is supported and should work, my experience says it is a bit unpredictable. Good luck.
Helen | Western Australia
Want to discuss ways to increase your activity? Visit Get Moving in the Lifestyle Discussion Forum.