Question juridique clé
Whether the federal appeal could proceed despite the appellant's failure to pay the court-ordered advance on costs within the extended time limit.
Solution extraite
The appeal could not proceed and had to be dismissed without entering into the merits.
Motifs extraits
The appellant failed to pay the advance on costs even during the grace period; under Art. 62(3) BGG, the court therefore had to refuse entry in simplified procedure under Art. 108(1)(a) and (2) BGG.