Questione giuridica chiave
Whether the federal appeal is admissible despite non-payment of the requested advance on costs
Decisione estratta
The appeal is inadmissible because the appellant did not pay the CHF 2,000 advance on costs within the additional deadline.
Motivazione estratta
Under Art. 62 LTF, failure to pay the advance within the supplementary deadline requires the appeal to be declared inadmissible; that condition was not met here.