Question juridique clé
Whether the appeal against the cost-advance order was sufficiently reasoned under Art. 42(2) BGG.
Solution extraite
No. The appellant did not explain why the interim procedural order amounted to denial or delay of justice, nor did he show any other violation of federal law.
Motifs extraits
The challenged order was issued promptly after the cantonal appeal was filed and served on all participants. The brief contained no substantiated legal arguments addressing this procedural context.