21 Xc60: navigate to a phone contact

[Nibbirg]

Hi all - first post from me so i hope somebody will have the answer to what i hope is a straight forward query.

The sensus navigation system should allow me to ask it to navigate to a contact in a connected phone. However, the system just says the contact's address can not be found on the map. The relevant extract from the handbook says contact addresses must be stored in the phone exactly as it is on the here maps data base - which they are. Regardless of how i mess around with the contact address ie deleting the post code or keeping it etc, the address can not be found on the map.

My phone is a samsung S9 and all other contact functions work in sensus ok ie making calls.

Has anybody else had this issue and managed to store contact details in a format that sensus can navigate to. Thanks