Questione giuridica chiave
Whether the appeal had to be declared inadmissible because the advance on costs was not paid within the extended deadline.
Decisione estratta
Yes. Since the appellant did not pay the advance on costs within the final non-extendable deadline, the appeal was inadmissible.
Motivazione estratta
The court noted non-compliance with the advance-payment order and applied the sanction of inadmissibility under the Federal Supreme Court Act, using the simplified procedure.