Kernrechtsfrage
Whether the appeal could be extended by allowing payment of the court advance in installments after the final deadline.
Extrahierter Entscheid
No exceptional and unforeseeable impediment was shown; the extension request could not be granted.
Extrahierte Begründung
A short supplementary deadline for a court advance is, as a rule, not extendable. The appellant's inability to pay the full amount immediately, especially after refusal of legal aid for lack of proof of indigence, did not justify a further extension.