Question juridique clé
Whether the cantonal court unlawfully refused restoration of the time limit for paying the advance costs and thus the reopening of the appeal proceedings.
Solution extraite
The cantonal court applied cantonal procedural law in a constitutionally compliant manner; the medical certificate did not justify the late request for restoration.
Motifs extraits
Federal review was limited to arbitrariness because the matter concerned only cantonal procedural law. The certificate did not show that the appellant was unable to act or instruct another person, and the restoration request was filed too late under the ten-day deadline after the obstacle ceased.