Kernrechtsfrage
Whether the federal complaint had to be entered into despite non-payment of the required advance on costs.
Extrahierter Entscheid
No. Because the advance was not paid within the extended deadline and no proof of timely payment was provided, the complaint could not be considered.
Extrahierte Begründung
Under Art. 62(3) BGG, failure to pay the advance after a warning leads to non-entry under Art. 108(1)(a) BGG.