I'm sorry you are having trouble.
I asked people at One Click Pass and that seems to be a generic error response when a a credit card issuer will not honor a request for payment. Most commonly it will be because they are reporting the funds are not available.
I don't think this is an address issue, however I believe the German word for "zipcode" is "Postleitzah". Maybe someone can correct me if I'm wrong?
Is there perhaps a different credit card you can try using?
I do know that One Click Pass can only accept Visa, Mastercard and Discover at this time.
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