It’s a very good site, with many single of all areas and across the Jewish spectrum. Yes, those who pay do get better service and better benefits. If that weren’t the case, than why charge membership at all?
Please realize that although it does a “Chesed”, it still has costs to maintain the site and the like.
I would recommend paying on a trial basis for 1-3 months and then see how your feel about these issues.
Worse comes to worse view your trial payment as Tzedaka (someone does benefit) and in the zchus you pay and help someone else, you should find your bashert iyH.
Hope this helped!