Questione giuridica chiave
Whether the appeal could be entered into despite non-payment of the ordered cost advance within the extended deadline.
Decisione estratta
No entry could be made because the cost advance was not paid within the additional deadline.
Motivazione estratta
Under Art. 62(3) BGG, failure to pay the requested advance even after the grace period requires non-entry; the court therefore decided under Art. 108(1)(a) BGG.