The beauty of a digital pilot logbook is that you can always correct an incorrect entry without the whiteout.
Edit your logbook flight to:
Increase logbook accuracy
To edit a flight or logbook entry:
Tap your Profile
In the Flights section, tap See all
Tap the entry you wish to edit
Tap ... and Edit
Update the information as needed
Tap Save
NOTE: You can't edit your flight from the Home feed, so you'll need to find the flight in your Profile's Flight section.