Questione giuridica chiave
Whether the appeal could be examined despite non-payment of the cost advance.
Decisione estratta
No. Because the advance was not paid within the extended deadline, the Federal Court did not enter into the appeal.
Motivazione estratta
The court had warned that failure to pay would lead to non-entry. As the advance was not paid on time, non-entry followed under Art. 108 BGG.