Questione giuridica chiave
Whether the federal appeal is admissible despite non-payment of the court advance within the extended time limit.
Decisione estratta
The appeal is not admitted because the appellant failed to pay the advance on costs within the additional deadline.
Motivazione estratta
Under Art. 62(3) BGG and the simplified procedure of Art. 108(1)(a) and (2) BGG, non-payment of the required advance justifies non-entry.