Hey there
Today I bought the Conbee II Stick (39,95€) from Amazon which should enable me to discover the sensors with ease. Furthermore the bridge does not get used → no calling back home to China.
I talked to Xiaomi support via chat, mail and the feedback hub in the app and did not get a useful response of any of them.
The stick should come on Monday, I am looking forward =). It’s not the prettiest solution as it costs an extra 40 bucks but I really want those sensors.