Kernrechtsfrage
Whether the complaint is admissible despite failure to pay the advance on costs within the non-extendable deadline.
Extrahierter Entscheid
The complaint is inadmissible because the appellant neither paid the advance nor proved timely debit in the prescribed manner.
Extrahierte Begründung
After a warning under Art. 62(3) BGG, the appellant failed to comply with the non-extendable grace period; under Art. 108(1)(a) BGG the court must not enter into the complaint.