How do I stop route directions displayed on map switching to text display of directions

GeoffMilton022 Registered Users Posts: 1
Novice Seeker
edited December 2021 in Devices using Wi-Fi®
Whenever I am following a route or track my TomTom automatically switches from a map display to text directions overlaid on a greyed out map which I cannot view. This happens in just a few seconds at most. I want the map view only with audio directions. Its incredibly annoying as I am a driving instructor and my students don't want to read text. I have updated to the latest version of software and the device has been reset but it makes no difference. Any help would be very welcome! Its driving me nuts!