Saeco Magic comfort plus SUP012DER

Hello,
I hope someone can help me because I can not get any further.
Hot water, steam, powder compartment goes all without problems. But if I want to have a coffee about the bean hopper it does not go unfortunately. The grinder starts and is much too long on and then comes the error message "bean hopper empty" powdered coffee missing.
The following I have already replaced / checkedThe
complete electronics sent in and it was repaired on the circuit board something
.
But without success. I was not told what was done. For whatever reason.
Grinder replaced, microswitch on the dosing flap replaced and everything cleaned.
Who can help me?
Saeco Magic Comfort Plus

Have you looked in test mode whether the switch is recognized by the dosing valve?

Have the test mode times in the attachment as a PDF.