Question juridique clé
Whether the appeal was admissible despite non-payment of the advance of costs within the additional deadline.
Solution extraite
The appeal is inadmissible because the required advance of costs was not paid within the non-extendable additional deadline.
Motifs extraits
Under Art. 62(3) LTF, failure to pay the advance within the time limit results in inadmissibility; costs are borne by the appellant under Art. 66(1) LTF.