Questione giuridica chiave
Whether the appeal should be entered into despite non-payment of the cost advance within the extended deadline.
Decisione estratta
No. Because the cost advance was not paid even within the additional deadline, the appeal could not be considered.
Motivazione estratta
Under Art. 62(3) BGG and Art. 108(1)(a) BGG, failure to pay the required advance after the grace period leads to non-entry.