Question juridique clé
Whether the appeal could be entered into after the appellants failed to pay the advance costs within the extended deadline.
Solution extraite
No; the court refused to enter into the appeal because the advance costs were still unpaid after the grace period expired.
Motifs extraits
Under Art. 62(3) BGG and in simplified procedure under Art. 108(1)(a) BGG, non-payment of the ordered advance within the extended deadline requires non-entry.