My ZENEC device does navigate me wrongly and some roads are not available in the map?

AW: Please note that this navigation software package is using digital maps compiled by NNG (with raw material from OSM).

In general, it can never be ruled out that digital map data is incorrect at certain locations such as intersections, new roads, etc. and the navigation system will provide you with wrong routing instructions. Map content errors can only be handled by the content provider and nobody else. Map data errors can be reported to NNG directly, using the following link – for which an active user account must be opened first:

https://www.openstreetmap.org/