Question juridique clé
Whether the federal appeal was admissible despite non-payment of the advance costs after a final extension.
Solution extraite
No. The appellants did not pay the advance costs within the final extended deadline and could not rely on a further extension.
Motifs extraits
Under Art. 62 BGG, failure to pay the advance costs after a duly set and extended deadline leads to non-entry. The appellants offered no specific, unforeseeable impediments and only asserted inability to pay on the last day.