Why do my step counts differ between the challenge and my profile?
In the Walk15 app, steps in a challenge are counted only from the moment you join the challenge or when the challenge starts. If you join later, your previous steps will not be included in the challenge.
Meanwhile, the steps in your profile are counted from the moment you create an account and select a step provider.
If you see differences between your profile steps and challenge steps, this is normal and depends on when you joined the challenge.