This is a real story from one of my friend:
“Got one Carprog clone version from China and I successfully use to read pin code on older Opel like vectra, astrag, zafira a, on kline. Carprog clone will read pin from astra H edc16 tested many times. (PS: someone feedback genuine carprog can’t read correct pin from opel edc16 ecu.)
I read it on Z20LER ME 7.6.2, if your carprog is clone need modify A1 Adapter to read Opel Can. Check your A1 Adapter, this solution should work for Opel Can.
Pic 1: Before
Pic 2: after