Are you sure? The first log indicates otherwise. Can you post a pic with the origin, destination and navigation manager in it? Btw this system does not use Unreal’s Nav Mesh. DoN’s navigation manager (with its bounds correctly configured) is sufficient.
The second message is (mostly) innocuous. I should downgrade it from an error to a warning in the next patch. The message is telling you that the system made some adjustments to your pawn’s starting/ending position to facilitate pathfinding. Usually that should not cause any other issues.