So as follows.
I just bought the Game Pass from Xbox. Since it was only 1 euro, I tried it with the cellphone method. Then I entered O2 (I have Aldi talk prepaid) and my phone number and the confirmation code. Is the jz billed from the Aldi talk credit or did I almost not pay with anything because Aldi Talk is not equal to o2? Or is that so?
It will then be deducted from your Aldi Talk credit as normal. As a provider, Aldi Talk uses Medion mobile, which in turn uses the network of o2. The Telefonica core brand.
ALDI-Talk is still E-Plus, with o2 it is not possible. But note that you can't pay for everything on the internet with prepaid credit.