Questione giuridica chiave
Whether the appeal was admissible despite the appellant's failure to submit or identify the challenged decision.
Decisione estratta
No. The formal defect was not cured, so the court could not examine the appeal.
Motivazione estratta
Under Art. 42(5) BGG, the appellant had to cure the defect after being invited to do so. He refused delivery of the court's letter and remained responsible for ensuring service of official acts after filing the appeal.