If you registered a weight incorrectly, you can go into the app and change it, if you know which date is wrong, you do as usual when you register a new weight but instead of today's date you choose the date that has the wrong weight. When you press save, the incorrect weight will disappear.
If you do not remember which date has the wrong weight, you can see it in your logbook, below is a guide on how to find the right date.
1) Open the app and tap on progress
2) Tap "My Log book"
3) Press weight, now you can see which dates you have registered weights, locate the one that is wrong.
4) Tap the arrow in the upper left
5) Tap weight
6) Tap "Track weight"
7) Type in the correct weight and select the date the incorrect registration was made. Tap Save.