Questione giuridica chiave
Whether the appeal could proceed despite non-payment of the advance costs within the final deadline.
Decisione estratta
No. The Federal Supreme Court did not enter into the appeal because the advance costs were not paid within the non-extendable grace period.
Motivazione estratta
Under Art. 62 BGG, the party must pay advance costs; if the amount is not paid even within the grace period, the Court must not enter into the filing. The simplified procedure under Art. 108 BGG was applied.