There are two ways that you can add/edit a past log. You can either press the + log button on the bottom right of the screen and change the date to your desired day (top middle) and complete the log. Or you can click into the calendar and click on the specific day you forgot to log, it'll open a box that offers you the ability to "edit log" in the past.
How do I add a log for a past day? How do I edit an old log?
