Kernrechtsfrage
Whether the insurer had to enter into the opposition against the EL denial.
Extrahierter Entscheid
No. The opposition did not meet the formal requirements because it lacked a sufficiently reasoned confrontation with the decision, and the cure period expired unused.
Extrahierte Begründung
Art. 10 ATSV requires an opposition request and at least a rudimentary reasoned challenge. The claimant's statements merely repeated income figures or described future difficulties without contesting the calculation.