Feed digest is the best sort of thing of its kind. I've used it for several years, ever since it was rssdigest, donated to it and have always liked it. But if the new owners can't even get someone to respond on the forum when clearly there are updating issues, well, it's unfortunate.
I replaced my feeddigest code with (also php) rssfeedreader. I don't like that it's got a tiny ad link but at least it's updating correctly.