Unfortunately hmail is hard-coded for an exact string pattern for SA results & it has been discussed numerous times on the forum. (Think I was the one who brought it up when I was evaluating hmail like 2 years ago)

Odds are changing hits to score in SA config would solve the problem. As an example here is a 'proper' (as in working) string:

Key is score vs hits. I don't know entire history of that string default in SA but for some reason I recall hits used to be the default long ago & it was changed to score at some point because my old mail server MTS Pro used 'hits' not 'score'. That is how I discovered this back then.
Bill