Kernrechtsfrage
Whether the federal appeal could proceed despite non-payment of the required court advance within the non-extendable grace period.
Extrahierter Entscheid
No. Because the appellant neither paid the advance in cash nor proved timely debiting of a Swiss post or bank account within the extended period, the appeal could not be examined.
Extrahierte Begründung
The advance-payment order had been served with a warning of non-entry. After the grace period expired without payment or proof of payment, non-entry followed under the applicable federal procedural rules, regardless of the later submissions attacking the order as arbitrary.