Kernrechtsfrage
Whether the appeal had to be admitted despite the appellant's failure to pay the court advance within the non-extendable grace period.
Extrahierter Entscheid
No. Because the advance was neither paid in cash nor validly credited within the grace period, the court had to refuse to enter into the appeal.
Extrahierte Begründung
The appellant had been warned under Art. 62(3) BGG that non-payment within the non-extendable deadline would lead to non-entry. He neither paid at the court nor by post counter nor furnished the required proof of timely account debit for a payment order.