It happens also to me, two bluetooth sensors, cadence and speed, but only the first one shows it's MAC: in the config menus (ConfiguraciĆ³n-Sensores-Cadencia/Velocidad BTLE) First option (Cadencia/Velocidad BTLE) shows MAC of the sensor, second option (Segundo sensor) does not, it dissapears when exiting and returning again.
Nevertheless, the app internally seems to remember the second sensor.
Nevertheless, the app internally seems to remember the second sensor.