Kernrechtsfrage
Whether the federal complaint was admissible despite non-payment of the court advance within the final deadline.
Extrahierter Entscheid
No. Because the complainant did not pay the advance or provide the required proof of timely payment, the court had to refuse entry on the complaint.
Extrahierte Begründung
After a first deadline and a non-extendable grace period under threat of non-entry, the advance remained unpaid; Art. 62(3) BGG and Art. 108(1)(a) BGG therefore required non-entry.