Kernrechtsfrage
Whether the cantonal court acted arbitrarily by finding that the cost advance was not paid in time and therefore refusing to hear the appeal.
Extrahierter Entscheid
The challenged non-entry decision was not arbitrary; the evidence submitted did not establish timely payment of the advance.
Extrahierte Begründung
Only a poor photocopy of a postal receipt supported the claim, while the cantonal court's account records showed no matching payment. The complainant did not produce the original receipt or a clear postal or company confirmation, although such proof would have been readily available.