Help

My steps usually reset at midnight to 0 steps. But now it just keeps going everyday without resetting. Like if I walk 4000 steps today, at midnight for the new day it'll reset to 0, but instead if I walk 4000 steps, at midnight it'll still say 4000 steps, then if I walk 600 more steps on the new day, at midnight it'll say 4600 steps, like it just continues the steps instead of resetting. How can I fix this please??? I've looked all over the app