Question juridique clé
Whether the appeal could be entered into despite non-payment of the court advance.
Solution extraite
No. Because the advance was not paid within the final deadline, the appeal had to be dismissed without entry under the simplified procedure.
Motifs extraits
The court noted that the advance remained unpaid even after the final, non-extendable deadline; under Art. 62(3) BGG and Art. 108(1)(a) BGG, this requires non-entry.