damaltor

I had the same Problem. This might be relevant to you.
https://wordpress.stackexchange.com/questions/375956/comments-invisible-after-moving-wordpress-to-new-server-while-commenting-still

I had the same problem. The captcha showed 1 out of 10 times after refreshing the page. I did now add the two lines from robert, and it works fine. Still, this has to be considered a bad hack.

I always liked CF7 for it simpleness and good performance, and in combination with “WP recaptcha integration” the contact form worked perfectly. Unfortunately they decided to remove CF7 support as CF7 does now use its “own” recaptcha implementation – which obviously is not working well. great.

Dude, that was quick. Works like a charm. Thank you man!

I have the exact same problem. On one of my Websites i did not yet update the plugin, and it works flawlessly. It broke on the last update.