Unfortunately, Paypal in Germany no longer allows to make a purchase through Paypal without creating a Paypal account.
We were not aware of this, so we are now looking for an alternative way to pay via creditcard. This will probably take a couple of weeks, but will definitely be sorted within the preorder period.
So, if you want to preorder for Mac or Linux, but are uncomfortable registering a Paypal account, then please wait until we have sorted the situation.
Thank you for your understanding
Best,
Markus