Questione giuridica chiave
Whether the appeal was admissible despite non-payment of the ordered cost advance within the additional time limit.
Decisione estratta
The appeal was not admitted because the required cost advance was not paid within the set grace period.
Motivazione estratta
Under Art. 62(3) BGG, failure to pay the cost advance within the additional deadline leads to non-entry; the court therefore did not examine the merits under Art. 108(1)(a) BGG.