Kernrechtsfrage
Whether the appeal had to be declared inadmissible because the appellant failed to pay the requested advance on costs within the additional time limit.
Extrahierter Entscheid
Yes. Because the advance was not paid within the extended deadline, the appeal had to be declared inadmissible in simplified proceedings.
Extrahierte Begründung
The court relied on Art. 62 para. 3 LTF and Art. 108 para. 1 let. a and para. 2 LTF, which allow summary disposal when the advance on costs is not paid despite warning.