I have contacted them again.
now they suddenly say it is not possible. but they will open a case to get me the money back for the period I have paid for.
and then I can buy them unlimited
I have had a monthly subscription to Innodrive and Lane Assist since I bought the car (September).
I got a new credit card, so I updated the payment information and now suddenly I can only buy these on permanent payment. (2000 dollars/1800 euros)
I have called customer service in Porsche...