Questione giuridica chiave
Whether the appeal was admissible after non-payment of the court-ordered cost advance within the extended time limit.
Decisione estratta
The appeal could not be entertained because the cost advance was not paid and no legal aid request was made.
Motivazione estratta
Under Art. 62(3) BGG, failure to pay the required advance after a grace period leads to non-entry under Art. 108(1)(a) BGG.