Kernrechtsfrage
Whether the appeal had to be entered into despite non-payment of the cost advance within the fixed grace period.
Extrahierter Entscheid
No. Because the appellant neither paid the advance nor proved timely debit/payment as required, the court had to refuse to enter into the appeal.
Extrahierte Begründung
Under Art. 62(3) BGG and the warning of non-entry, failure to comply with the non-extendable deadline triggers non-entry under Art. 108(1)(a) BGG.