Question juridique clé
Whether the appeal could be entered into despite the late cure of the formal defect under Art. 42(5) BGG.
Solution extraite
No. The missing attachment was filed only after the deadline set by the court, so the defect was not timely cured.
Motifs extraits
The appellant failed to remedy the notified formal defect within the extended time limit; the later filing was out of time, requiring non-entry.