Questione giuridica chiave
Whether the social-insurance appeal should be admitted despite non-payment of the advance of costs within the extended deadline.
Decisione estratta
No. The appeal was inadmissible because the appellant did not pay the requested advance within the additional time limit.
Motivazione estratta
Under Art. 62(3) LTF, failure to pay the advance of costs after a warning allows the court to declare the appeal inadmissible in simplified proceedings under Art. 108(1)(a) and (2) LTF.