Question juridique clé
Whether the appeal had to be entered into despite non-payment of the court advance within the extended time limit.
Solution extraite
No. Because the advance was not paid even during the grace period, the court could not consider the appeal.
Motifs extraits
Under Art. 62 para. 3 BGG, failure to pay the required advance after warning allows non-entry in simplified procedure under Art. 108 para. 1 lit. a BGG.