Question juridique clé
Whether the appeal could be entered into despite non-payment of the court cost advance within the additional time limit.
Solution extraite
No entry could be made because the appellant did not pay the advance even after the grace period.
Motifs extraits
Under Art. 62(3) BGG, failure to pay the required advance after reminder and deadline extension permits non-entry in simplified procedure under Art. 108(1)(a) and (2) BGG.