I made a mistake, can I correct previous entries?

Yes. You can re-enter or delete data from previous days.
  1. Go to the Your Progress page, and you'll see an option 'enter data from previous days' (if you've already entered today's reading; if not, click 'enter your reading now' then, 'enter data for a different day').
  2. Select the day on the calendar where you made the mistake and enter the correct reading in the box above.
  3. You are also able to delete data if it was entered by mistake.
  4. Click 'Continue' and the system will save the new reading for that day and re-analyse your figures (if there's a problem with them it will let you know at this point.)