Kernrechtsfrage
Whether the appeal could proceed despite non-payment of the ordered advance on costs.
Extrahierter Entscheid
No. Because the advance on costs was not paid within the set grace period, the Court had to decline to enter into the appeal under Art. 108 BGG.
Extrahierte Begründung
The Court had warned that non-payment would lead to non-entry. The appellant's claim of an agreed extension was false, and the advance remained unpaid.