Solac ca 4815

I have a solac ca 4815 my brew group stuck how do I get the out again

hi

>I had the BG clamped at the beginning, because the marking did not look in the same direction:

>suggest to read the S23 of the BA:...
9. Insert the brewing group so that the two marks
point towards each other.
WARNING! When cleaning the brewing group, the
inner piston pressing the coffee portions can be moved relatively easily
. To return it to its original position, however, you will need the key for the brewing group, which is included in the scope of delivery of your fully automatic coffee maker. Make sure that the marking of the fixed and movable
part point towards each other. If this is not the case, proceed as follows:
Place the key in the hole.
Turn the key to the left (counterclockwise),
until the two marks on the fixed and moving parts match.
10. Move the brewing group lever to the right.
11. Screw the upper screw of the brewing group tight.

then the bg should be perfectly releasable and not clamped.

shouldn't this be the reason for the clamping and it should only be a matter of handling: loosen the locking screw and lever, hold the bg with your left hand
and turn it slightly out of the housing counterclockwise.