The UX is a bit misleading when adding new device via search, because it’s not immediately obvious if the device you selected is available for multiple networks, and that the first network was implicitly selected.
E.g. if you go here and type ‘Yabby’ in to the search, you get a result, but it is default to Actility.
In my case I am using Helium, so I ‘got stuck’ until I realized that you had to first click ‘Helium’ and then search, in which case the correct network is selected.