Question juridique clé
Whether the federal appeal must be heard despite non-payment of the court advance within the extended deadline.
Solution extraite
The appeal is not admitted because the advance costs were not paid even after the additional time limit expired.
Motifs extraits
Under Art. 62(3) BGG and the simplified procedure of Art. 108(1)(a) and (2) BGG, failure to pay the ordered advance costs after a final grace period requires non-entry.