Kernrechtsfrage
Whether the appeal was admissible despite non-payment of the requested advance on costs.
Extrahierter Entscheid
The appeal was inadmissible because the appellant failed to pay the advance within the extended deadline.
Extrahierte Begründung
After an initial order and a supplementary deadline warning of inadmissibility, the appellant still did not pay; under the simplified procedure, the appeal had to be declared inadmissible.