No response from customer support, it's been a month now. I sent request through app as well as amazefit official website but they just don't care. All they care about is selling their over rate product. Lesson learnt stay away from Amazefit be it budget segment or premium. There are many better brands under 5k & in premium segment with better sensors. My old Honor band 4 sensors beat this Amazefit gts2 mini easy. Be it steps or heart rate. CONCLUSION- NEVER BUYING AMAZEFIT EVER AGAIN.