Question juridique clé
Whether the appeal must be entered into despite non-payment of the court-ordered cost advance within the additional deadline.
Solution extraite
The appeal cannot be considered because the appellant failed to pay the required advance even after the extension.
Motifs extraits
Under Art. 62(3) BGG, failure to pay the advance within the set time leads to non-entry; the case was decided in simplified procedure under Art. 108(1)(a) BGG.