Kernrechtsfrage
Whether the appeal was admissible after non-payment of the court-ordered cost advance within the extended time limit.
Extrahierter Entscheid
The appeal could not be entertained because the cost advance was not paid and no legal aid request was made.
Extrahierte Begründung
Under Art. 62(3) BGG, failure to pay the required advance after a grace period leads to non-entry under Art. 108(1)(a) BGG.