Question juridique clé
Whether the appeal could be entered into despite non-payment of the advance on costs within the extended deadline.
Solution extraite
No entry could be made because the advance was not paid within the extended deadline.
Motifs extraits
Under Art. 62(3) BGG, failure to pay the ordered advance after being warned allows non-entry; the simplified procedure under Art. 108(1)(a) and (2) BGG applied.