Kernrechtsfrage
Whether the appeal had to be entered into despite non-payment of the required advance on costs.
Extrahierter Entscheid
No. Because the appellant did not pay the advance costs within the extended deadline, the Court did not enter into the appeal.
Extrahierte Begründung
Under Art. 62(1) and (3) BGG, the appellant must pay the likely court costs in advance; if the advance is not paid within the grace period, the Federal Supreme Court must dismiss the filing without entering into the merits.