Kernrechtsfrage
Whether the appeal had to be declared inadmissible for non-payment of the advance of costs after expiry of the deadline.
Extrahierter Entscheid
Yes. The advance was not paid within the deadlines, so the appeal was inadmissible.
Extrahierte Begründung
The payment orders were deemed validly served under Art. 44(2) LTF despite the appellant's absence; the deadlines therefore expired without payment, triggering inadmissibility under Art. 62(3) LTF in simplified procedure.