I have now read a lot in this great forum and also cleaned the machine, but unfortunately the problem still occurs.
After cleaning, the first coffee came out of the machine super ... The second, however, was again the error that the coffee is only very thin. If you now take the coffee grounds container out of the machine, you can see that the grounds are very very moist. I thought it might be the seals of the head, but they seem to be fine.
So I just removed the tray for the cleaning tablet or powder and could then adjust that after the brewing process the sieve(?) does not "clack" down - but I can tap it with an object very easily and it quicks down.
How can I fix this error? What is the best way to proceed here?
Thanks for your help!