Question juridique clé
Whether the appeal had to be declared inadmissible because the court advance was not paid within the set time limit.
Solution extraite
Yes. The failure to pay the required advance within the prescribed deadline required the appeal to be declared inadmissible.
Motifs extraits
Under Art. 62(3) BGG, non-payment of the advance of costs leads to inadmissibility; the appellant did not comply despite an additional non-extendable deadline.