UPDATE: Catherine at Helicon support reached out to me. They are swapping out the unit. Great customer service!

FB Tube (magnetic cable version)
Nikon D500
Nikkor 60mm f/2.8G ED Macro
iPhone X and iPad Air2

Just received FB Tube from another user who was switching camera brands. Device appeared to be operational at first. As part of the initial setup, I downloaded the latest firmware (1.0.3) into the Tube ...