help with tomtom on iphone 3gs

hi guys got the tomtom for my iphone thhe problem is it does not navigate evry thing else seem to work fine is there something i need to do to get it to work or do i need to re - install it any help appricated....thanx

hi mate , try uninstalling the app rebooting your iphone then installing it again, see how you get on , also try another navigation app, either co-pioilet, or navagon or even try downloading another version of the tomtom app see how you get on