I have two hours needed to sign the balance to!
I was constantly "Bug: / connection_lost" when trying to log the balance in the WLAN.
Then I have to get out (of the tip with "Factory" I have from another review):
1) WLAN switch off the phone
2) during initial WLAN and login via Bluetooth, when asked for WLAN (the question is also difficult to recognize as such) then select "no wireless"
3) the balance is activated via Bluetooth and then makes an update
4) after the update has finished and the scale is restarted (important: wait), a battery take out and reinsert, yet as long as "Hello" can be seen on the display: the two buttons on the bottom for about 15sec press until a "Factory" is displayed.
5) remove the scale from the app again
6) WLAN switch on the mobile phone
7) then scales login as usual and at question-Fi then enter its data (SSID should not be visible)
IMPORTANT: The WLAN implementation of the scale came with my password does not clear 63 characters with letters, numbers, special characters and spaces, until after I shortened the password have simplified (no special characters) closed the WLAN application!
That alone drove me almost to despair! For 2 star deduction, because I was about to return the balance.
The balance is now in power and working, let's see how long :-)