Question juridique clé
Whether the appeal had to be declared inadmissible because the ordered advance on costs was not paid in time.
Solution extraite
Yes. Because the advance on costs was not paid within the non-extendable additional period, the appeal was inadmissible.
Motifs extraits
Under Art. 62 para. 3 LTF, failure to pay the advance on costs within the set time limit requires non-entry.