What if they don’t have any matches for me?

I have been hearing that sometimes eHarmony won’t accept you if you don’t fit a certain profile. They say that they can’t find any matches for you and you aren’t allowed to join. Is this true? What if I do their personality profile questionnaire and find out that they have no matches for me? Do they take your money if they don’t have matches? I have been thinking of trying eHarmony since I found some eHarmony discounts online that I could use to make it a bit cheaper to give it a try. Will it be worth my time and money?