Question juridique clé
Whether the appeal could be entered into despite non-payment of the advance costs within the extended deadline.
Solution extraite
No. Because the advance costs were still unpaid after the grace period, the appeal had to be dismissed at the threshold.
Motifs extraits
Under Art. 62(3) BGG, non-payment of the ordered advance costs after expiry of the additional deadline requires non-entry in the simplified procedure under Art. 108(1)(a) BGG.