Whether the appeal against the 16 December 2010 AI decision had become moot after the administration's reconsideration.
The respondent validly reconsidered and annulled its earlier decision within the response period; the appeal therefore became moot and had to be struck out.
Under Art. 53(3) LPGA, an insurer may reconsider a contested decision until it submits its response. That occurred here, and the original decision was annulled.