Kernrechtsfrage
Whether the defective appeal had to be entered into after the appellant failed to cure the formal defect.
Extrahierter Entscheid
The appeal was not entered into because the appellant did not comply with the instruction to submit a signed brief and the challenged decision.
Extrahierte Begründung
The cure notice was deemed validly served after seven days despite the postal retention order; the appellant had to expect further procedural instructions, so the failure to correct justified non-entry under the summary procedure.