Ok - this time (the 4th or 5th time starting Ardour after connecting my interface) in the create new Session dialogue it allowed me to change my Audio interface.
Previously the dialogue to change my interface didn’t show up until now - the 4th or 5th time I started Ardour 5.5 after adding and configuring the audio interface.
Is there a way TO FORCE this dialogue to show up or access it directly??
ps. neither AudioDesk nor Logic Pro offer any way to start and configure JACK, even though they can both use it. That contributes to their relative ease of interface selection.