Same problem here. But for me it doesn’t work in all the forms. Had to disable this plugin, but it helped me much with spammers and hackers so I’d like to reenable it.
Some time ago the problem started with showing “re-enter captcha correctly” just once, so I had to try to login again, and then everything was okay.
But recently it’ve broken at all. I tried different checkboxes in the plugin settings but it won’t help.
My website is https://crossfit.in.ua. How can I help you to fix this bug?