Can’t add sensors to simulator

In simulator, Settings -> Manage sensors -> Add

Nothing shows up. Am using a Garmin ANT+ antenna that I use with my Tacx Neo, or a CooSpo USB dongle. In both cases trying to add a sensor results up in ‘No sensors four. Retry?’ message. Retrying achieves nothing.

Have tried to pair a Garmin HRM dual (ANT+/BLE), a Varia radar/rear light and a Varia front light, can’t add any of them.

Either I’m doing something wrong or the simulator is broken. If it’s the first case then surely some instructions should be supplied, or if it’s the latter case then this really needs fixing ASAP as interacting with the sensors is a pretty basic requirement.