Question juridique clé
Whether the appeal could be extended by allowing payment of the court advance in installments after the final deadline.
Solution extraite
No exceptional and unforeseeable impediment was shown; the extension request could not be granted.
Motifs extraits
A short supplementary deadline for a court advance is, as a rule, not extendable. The appellant's inability to pay the full amount immediately, especially after refusal of legal aid for lack of proof of indigence, did not justify a further extension.