Classmates works well.
I was successful with it, for those I wanted to find.
I paid the trial membership thingie, (to get me in), then did what I needed to do, and let it expire.....I didn't need to be a membership longer for my initial 'seek n find' purpose....lol..I'm bad.

I have no idea how much the full membership is, but if I understand correctly, it is worth it if a longer term is what you seek.

Good luck, Michele. Hope you find who you're seeking.
Yay! What fun.

Shangrala