Question juridique clé
Whether the appeal met the formal requirements of Art. 42 BGG and was admissible
Solution extraite
The appeal did not contain an adequate challenge to the cantonal reasoning and therefore was not a valid legal remedy.
Motifs extraits
The filing lacked a concrete engagement with the lower court's findings, especially on the absence of a relevant change in health status during the comparison period; the appellant also did not show any legal error or qualifiedly incorrect factual finding under Arts. 95-97 BGG. Despite a prior warning and opportunity to correct, no response followed.