Health Connect help

How come most of these values are unknown or 0, for this markdown card?

and from the YAML editor:

type: markdown
title: Samsung Health
content: |-
  {% set sm_sensors = states
     | selectattr('entity_id', 'search', 'sensor.')
     | selectattr('name', 'search', 'SM-S918U')
     | sort(attribute='last_updated', reverse=true)
     | list %}
  {% if sm_sensors | length > 0 %}
    {% for s in sm_sensors -%}
    {{ as_local(s.last_updated).strftime('%I:%M:%S %p') }} {{ s.name }} = {{ s.state }} {{ s.attributes.unit_of_measurement if s.attributes.unit_of_measurement is defined }}<br>
    {%- endfor %}
  {% else %}
    None - No matching sensors found
  {% endif %}

FYI: I have the Galaxy S23 Ultra (SM-S918U) and a very old original Galaxy Watch (SM-R805U) -

Thoughts anybody?