Questions about 5400 Series

Dynamic pricing, also known as surge pricing or dynamic price management, is a pricing strategy in which companies adjust prices for products or services based on current market demand.It is a model that calculates prices using automatic algorithms. Factors such as competitors' pricing, supply and demand and other external factors are included. Behavioural factors must also be taken into account.

According to the information, the cheaper model is even newer.
I assume that one is an EU machine and the other an import. But if I were you, I would go for the cheaper one.
We have had it for a long time and are very satisfied.

Yes, I have been doing this since the beginning.
When starting the machine for the first time (new machine) and after each descaling process, you have to confirm that you have not inserted an Aqua Clean filter. This question comes up the first few times (approx. 5x?) and then the machine no longer asks.

There are many settings on the machine to adjust the coffee/espresso the way you like it. Strength, quantity, etc. It also depends on the coffee beans you use.

This sounds to me like an error in the logic (software) if the beans are otherwise ground with a normal coffee. Maybe do a factory reset?

I google it and its possible to buy a replacement.

Sorry, I just read that she has 4 profiles. It was still early in the morning.
I can't delete my question.