This is an old question and you may have figured this out or moved on but the information may be helpful for others.
To loop through a flexible content field to a repeater fields rows.
$repeater = 'repeater_name';
$count = intval(get_post_meta($post_id, $repeater, true));
for ($i=0; $i<$count; $i++) {
$subfield_value = get_post_meta($post_id, $repeater.'_'.$i.'_'.'subfield_name', true);
}