Question juridique clé
Whether the appeal met the federal pleading requirements and could be supplemented after the deadline.
Solution extraite
The submission did not sufficiently address the lower court's reasoning and could not be cured by granting an extra time limit; the appeal was therefore not admissible to that extent.
Motifs extraits
Art. 42 BGG requires a targeted, reasoned challenge to the decisive findings. A later 'Nachfrist' cannot фактически extend the non-extendable filing deadline.