Questione giuridica chiave
Whether the federal appeal met the formal requirements of Art. 42 LTF.
Decisione estratta
No. The appeal did not contain the required conclusions and reasoning, and the defect was not cured after the court's warning.
Motivazione estratta
Under Art. 42 LTF, an appeal must set out conclusions and reasons. The appellant did not address the cantonal court's inadmissibility reasoning and merely admitted the missed deadline, which was insufficient to show a violation of law or manifestly incorrect findings.