Yes, this is rather frustrating and can be overly complicated.
In my experience there is still one little match to be made or to be rejected somewhere in your list. At times, you get new suggestions when you refresh, or multiple suggestions for one person/profile. Scroll through the list and make sure there is not a single 'suggested' match in there. And if you get multiple for one person, make sure to reject the ones you do not want.
The number of 147 suggested matches does not say much, those numbers are always on top of the page.