Question juridique clé
Whether the appeal could be admitted despite non-payment of the advance on costs within the grace period
Solution extraite
The appeal could not be admitted; the court had to decline entering into the merits because the advance on costs was not paid in time.
Motifs extraits
Under Art. 62(3) BGG and the simplified procedure of Art. 108(1)(a) BGG, failure to pay the required advance even within the extended deadline leads to non-entry.