Kernrechtsfrage
Whether the appeal was timely in view of the deemed service of the cost-advance order
Extrahierter Entscheid
The service fiction under cantonal procedural law applied; the filing period began on the last day of the postal collection period.
Extrahierte Begründung
The appellants did not rebut the presumption that the postal service properly deposited the collection notice, and their temporary absence did not excuse failure to ensure receipt.