Why is my route not or only partially shown on the map?

1.  Error message " WARNING You have waypoints that are not routable. Check your route and delete the waypoints marked in yellow." appears:

Please check the entered address. Only waypoints with a determinable address can be entered.

2. A waypoint is color-coded within my route:

The waypoint cannot be reached by car. Reasons for this can be a roadblock or an address that is not navigable. Please delete the yellow marked waypoint. If you want to document exactly this locality, you can use the "Report" function instead of a waypoint