These were our stats before we stopped using FunCaptcha (today).
Started: 1,311,185
Solved: 1,117,234
Bots Blocked: 2,424,405
Solved %: 85.21
As you see, we still show the "Under Review" banner. FunCaptcha does not like cryptocurrency sites and now says they will employ an ad-free captcha fee.
They want to charge you for your visitors to solve their captcha.
We can't find anywhere how much they want to charge... their email just said that they will terminate your account if you do not agree to upgrade to the paid plan. It was hostile and we decided to distance ourselves from them.