Kernrechtsfrage
Whether the federal appeal is admissible despite non-payment of the advance on costs after the grace period.
Extrahierter Entscheid
No. Because the appellant neither paid the advance nor proved timely payment by debit confirmation, the Court must not enter into the appeal.
Extrahierte Begründung
After the request and non-extendable grace period under Art. 62(3) BGG, failure to comply triggers non-entry under Art. 108(1)(a) BGG.