Is the portafilter included in the delivery of the grinder?

Commissioned today and the 2 buttons flash alternately. According to the operating instructions, there is a fault, namely that the bean container is not inserted correctly. But this is not the case. The bean container fits perfectly and is locked into place. Is there a step in the commissioning process that we are overlooking? Or is the part defective ex works?

What are the dimensions of the portafilter adapter? I own an ascaso machine, accordingly I have a different container.

You can programme the left button to the desired quantity. We assumed that if you adjust the quantity to the small sieve, you can then fill the large one by pressing it twice. But then the large one overflows. And if you adjust it to the large one, it is too little for the small one. Does anyone have the same problem? (We use the Delonghi piston coffee machine/strainer)

Hi Does anyone also have the problem that a lot of coffee goes astray when you grind directly into the portafilter? Or does anyone have a solution? Thank you!

Can I use 58 mm portafilter with this grinder? Or only 51 mm? (which is coming with De'Longhi Dedica EC685)

"Function check ex works: Coffee grinders are subjected to a function check at the factory and tested with coffee beans. In rare cases, there may still be some ground coffee left in the bean container. In these cases, an information slip is enclosed with the bean container." Absolutely ridiculous lies. What kind of fool believes that? -> Every new coffee grinder is tested with beans by the manufacturer? No. -> After testing, every coffee grinder is meticulously cleaned to make it look unused? No. -> Afterwards, each coffee grinder is checked to make sure it really is clean? No. -> If it is not clean, it is not cleaned (again), but a note is put inside? NO!!! Translated into normal German, the statement from Galaxus simply means the following: "Since we get so many returns, we would like to deliver them as new again. Of course, we don't really clean the coffee grinders beforehand. Of course, the customer notices this and gets upset that he is getting used goods for the price of new ones. To stop him from sending the thing back immediately, we printed an amusing tall tale on a piece of paper, which our returns service then puts in the box. Thanks, you idiots, for buying from us anyway. But Brack & Co do the same‖.

KG 520.M is probably the older and KG 521.M the newer model.

What is the difference between the two models? Advantages and disadvantages?

When will the successor model KG521.M be available?