Question juridique clé
Whether the federal appeal must be declared inadmissible because the cost advance was not paid within the additional deadline.
Solution extraite
Yes. The appeal is inadmissible because the appellant did not pay the advance of costs within the non-extendable additional period.
Motifs extraits
After denial of legal aid and service of a first and then a final deadline, no payment was made; under Art. 62(3) LTF the consequence is inadmissibility, decided in simplified procedure under Art. 108(1)(a) LTF.