Melitta Caffeo Ci E970 Probleme (Undicht ect.)?!?

Good evening,

We have a Melitta Caffeo Ci E970 fully automatic coffee machine that has run wonderfully for years.

However, this has been leaking for a few days now, every day we have to wipe up the water under the machine on the kitchen worktop (are not just drips).

In addition, since today, the milk frother no longer works.
It seems to me as if the milk is not properly attracted, so it comes only hot droplets in the cup with air but little at no milk.
I had just run the milk frother through the Melitta Intensive Cleaning where I then heard strange squeaking noises.
After the third cleaning, the noise was gone, but when trying to draw cappuccino same problem with the milk frother.

Two problems at once.

Can anyone please help me out on what it could be or how to look at what where?

Thanks in advance.

Kind regards and a happy 3 advent.