Kernrechtsfrage
Whether the appeal was admissible despite non-payment of the court fee advance within the final deadline.
Extrahierter Entscheid
The appeal was inadmissible because the advance fee was not paid by the non-extendable deadline.
Extrahierte Begründung
After two payment deadlines had expired without payment, Article 62(3) and Article 108(1)(a) LTF required a non-entry decision.