i purchased a used cracked Apple Watch series 2 38mm. Changed screen with iCloud locked same model watch. Went perfect. Turned right on still displaying previous owners texts and such. I did a reset of the watch and now my iPhone 6s Plus says it’s paired and immediately starts to unpair giving a message that iPhone was unable to pair with watch. I’ve tried everything I’ve seen suggested. Wiped my iPhone, turned off iCloud, selected Chinese as language. What could it be? What else can I do. I don’t live near an apple store nor can I afford to send it in for repair.