Question juridique clé
Whether the appeal could be entered into despite non-payment of the court advance within the extended deadline.
Solution extraite
No. Because the advance was still unpaid after the grace period, the appeal could not be heard.
Motifs extraits
Under Art. 62(3) BGG, failure to pay the required advance after a final deadline allows non-entry in the simplified procedure under Art. 108(1)(a) and (2) BGG.