OK, I will give the answer by myself ;-) The common side of the shunt's should be connected to A+ / B+ that means together with the common side of the voltage divider for the offset.
Next question, is the any way to measure the voltage of the connected note ?- I know that there shoud be not a common GND - possibe do use Diodes?

Just a question, are the common side of the shunts connectet to A(+) ? I can not see it on the picture it could also connecte to GND (but I don*t belive it).
Thank you for a helping hand!