Why does my device show me a club/tag ID on its face during a round?

Your device has 'Show Club' set on as default. The 'Show Club' feature, active when using GPS + Track and Track mode, displays the last club that you had in your hand. If you pick up your driver and hit a tee shot with it, the D tag ID will remain on the screen of your device until you record your next shot.

The club ID on the watch is not a suggestion of what club to hit on your next shot.

This feature can be turned off in your settings.