Question juridique clé
Whether the appeal met the federal pleading requirements under Art. 42 BGG.
Solution extraite
The submissions did not satisfy the requirement to state, in a concise manner, why the challenged decision violated the law, so the court could not examine the merits.
Motifs extraits
The appeal and later letters merely referred to attachments and did not contain a proper, issue-focused legal reasoning; the warning about form requirements did not cure this defect.