OkCupid is the worst. I hate it. But I refuse to use a pay service. If I wanted to get rejected and pay for it, I'd just go to a bar.
OkCupid suffers from women being to fucking picky because they get spammed with tons of messages. The whole system is broken is you're a normal guy.
I guess it is time to work on the abs and play the lottery.
Don't use OKCupid as your sole hope for dating. Just check it once in a while, message a few attractive girls, don't have any expectations. If one of them messages you back, lucky you, but try to meet girls irl as your primary source of dating potential.