Question juridique clé
Whether the appeal had to be entered into despite non-payment of the court cost advance within the extended deadline.
Solution extraite
No. Because the advance payment was not made even by the extended deadline, the appeal could not be considered.
Motifs extraits
Under Art. 62(3) BGG, failure to pay the required advance after a grace period permits non-entry; the case was decided in simplified procedure under Art. 108(1)(a) BGG.