Solution:
Step 1 : Open Zepp Life App and click on Profile icon
Step 2 : Select your paired Mi Band to access its functions
Step 3: Scroll through the options list and select “Pairing restriction” to activate/deactivate this function.
Please note that :
1- when this function is enabled, you can no longer pair the device with other Apps.
2 -If the device is reset to factory settings, this function will be disabled automatically