Kernrechtsfrage
Whether the appeal had to be entered into despite non-payment of the court cost advance within the extended deadline.
Extrahierter Entscheid
No. Because the appellant did not pay the advance even within the supplementary deadline, the court could not enter into the appeal.
Extrahierte Begründung
Under Art. 62 BGG, the court may require an advance payment and set a grace period; if it remains unpaid, non-entry follows in simplified proceedings under Art. 108 BGG.