Phase 2 ( Heightened Alert) @ Mealbox at Matrix https://t.co/GLBgOB1y9N
Central Region
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ONE NORTH
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['phase', '2', 'heightened', 'alert', 'mealbox', 'matrix', 'https://t.co/glbgob1y9n']
[]
phase alert matrix
phase 2 heightened alert mealbox matrix
  [
    {"relatedness": False, "type": "none", "explanation": "This is not related to public housing or maintenance issues."},
    ]

It seems that the post you provided does not relate to a maintenance report feedback to public flat house. The term "phase 2 heightened alert mealbox matrix" does not appear to be a standard term used in public housing or maintenance contexts, and it does not provide any specific information or feedback related to a particular issue or facility. Therefore, the answer is that the post does not relate to a maintenance report feedback to public flat house.