Questione giuridica chiave
Whether the appeal could be entered into despite failure to pay the court cost advance within the deadline.
Decisione estratta
No entry was made because the advance was not paid or duly evidenced within the non-extendable deadline after warning of inadmissibility.
Motivazione estratta
Under Art. 62(3) BGG, failure to pay the advance within the set grace period, combined with no proof of timely payment by bank/postal debit, requires non-entry under Art. 108(1)(a) BGG.