A small number of people from Germany sometimes report an issue setting up Automatic payments through PayPal. The problem seems to be when you have bank draft selected as your payment method, if you change your PayPal settings to draw from a debit or credit card then it should all work ok for you.
Alternatively, you can also purchase subscription vouchers from our website instead of setting up an automatic payment. https://syrinscape.com/store/subscription_vouchers