If you find that a path is not shown on the Paths map or the Auto-Plot feature does not recognise a path, you can make changes to the Paths map yourself in the OpenStreetMap editor - it's very quick and easy to do. These changes will normally take effect within 24-48 hours.
You'll first need to sign up for a free account on OpenStreetMap and then login.
To make edits follow these instructions:
You can also upload missing paths from GPS recording by selecting the "GPS Traces" option from the menu at the top of the page.