Audi 4g ACC HELP!

Hello, first of all, Im here as I know German forums have much more informations than any other on the internet.

Recently I have changed front grills to S6 look, everything went allgood.

I dis lower by VCDS as my car has air suspension.

My ACC is not working anymore, it's not showing me any error on dash, just

A fault in VCDS program, Its saying

"Distance regulator:Incorrectly positioned"

Actually its not incorrecly positioned, it used to work normally before I lowered it.

Can there be any other problem with this or I have to lift it up to normal?

I really appreciate your time to read and help me!

Post in German Language! i will translate it!

Thanks a lot!