Deadlift increments 5kg/10lb -> 2.5kg/5lb
Deadlifts go up by 5kg/10lb until you hit 100kg/220lb. It goes up faster at first to keep up with your Squat which works similar muscles but increases faster since you're doing it every workout. Once you hit 100kg/220lb Deadlift, the app will lower the increments to 2.5kg/5lb to prevent plateaus.
it's not recommended to add 5kg/10lb per workout once you Deadlift over 100kg/220lb. But if you'd like to do this anyway, you can change the increments in settings - auto-add weight - Deadlift.