Replacement key cannot be adjusted?

Hello everyone,
kurze Info: hab einen A 6 AAT mit Motorschaden gekauft und auf AEL umgerüstet.
Since the car only had one key, I bought two spare keys.
The original key would be adapted to the new (AEL engine control unit).
The problem now is that the two spare keys cannot be adjusted .
and I bought a control unit - I don't remember which one exactly? - but it cost around 100 euros.
kaufen muß.
Kann mir da jemand behilflich sein oder auf einen Thraid verweisen ?
Hi Bastianna,