Question juridique clé
Whether the appeal had to be declared inadmissible because the advance on costs was not paid within the final deadline.
Solution extraite
Yes. The appellant neither paid the required advance by the final deadline nor showed grounds for waiving it.
Motifs extraits
Under Art. 62 LTF, failure to pay the advance within the additional deadline requires inadmissibility. The presidential order was deemed served after the postal holding period, and no timely justification for dispensation was submitted.