Question juridique clé
Whether the appeal is admissible despite non-payment of the advance on costs
Solution extraite
The appeal is inadmissible because the appellant neither paid the advance nor produced proof that the amount had been debited from a postal or bank account in favor of the Federal Supreme Court.
Motifs extraits
Article 48(4) LTF requires proof of payment or debit; absent that proof after the deadline extension, the appeal cannot proceed and must be declared inadmissible under Article 62(3) LTF.