TomTom GO 620 smartphone messages function not working!?

The TomTom MyDrive app is open and connected via bluetooth. The GPS and phone are paired properly.
I am receiving traffic data properly. Incoming calls notifications are being displayed on device. All seems to be fine and working EXCEPT for displaying a notification when I get a new text message.
In the TomTom Settings, under "Bluetooth," it does say "CONNECTED" under the Smartphone Message section. And I have followed all the Android app settings steps required to allow messages to be allowed on the GPS.
I'm at a complete loss as to what to do next! Can anyone help? Any insight at all would be appreciated.
Thank you,
Jem
Comments
Superuser
See pages 108 - 110 of the manual http://download.tomtom.com/open/manuals/gox20x/refman/TomTom-GO-EU-RG-en-gb.pdf
Have tried everything in the manual without success.
Any other suggestions?
Cheers,
Oldace.
Superuser
Have you got MyDrive App running in the back on the phone?
Doug
Any help much appreciated