It could be that the number of users that the current device can create exceeds the upper limit.
You can solve this problem by the following methods:
1. Open the Mi Home/Xiaomi Home APP >> Xiaomi Smart Scale S200 >> [Settings] at the upper right corner >> [User management], delete the members of the scale that are not commonly used;
2. Open the Mi Home/Xiaomi Home APP >> Xiaomi Smart Scale S200 >> [Settings] at the upper right corner >> [Share device] >> delete the members as you need.
Note:
The deleted data cannot be recovered, please operate carefully.