Questão jurídica principal
Whether the appeal met the formal admissibility requirements under Art. 61 lit. b LPGA
Decisão extraída
The filing lacked a sufficient statement of facts, reasons, and requests, and the defect was not cured within the granted time limit.
Fundamentação extraída
The original letter was only a request for explanations to the insurer, not a proper appeal. After the appellant failed to supplement it despite warning, the appeal had to be rejected as inadmissible.