Well, as I said, it only occurs on some of our sites – not all of them. And I personally am using version 52.0.2743.82 m on Windows 7, but clients have reported the same problem on Windows 10. I don’t think it’s the browser because if I open these same sites in Firefox, the CAPTCHA shows up, but refuses to accept any answer as the right answer. I’m just saying the Google disappearing CAPTCHA was the common thing that tipped me off that something was wrong on these few sites. And most of the sites, where I did a clean install of the plugin after this problem was FIRST reported (before they released the second patch after this thread was started) worked fine after that. So it’s hard to nail down. I’m really just trying to add data to your problem at this point, because I have been forced to find workarounds for these remaining couple of sites – disabling CAPTCHA. On other sites we have, it works just fine. Exact same server settings. Of course, there’s any number of differences in other plugins, etc. I’m just saying the common denominator is that none of this happened before the day this problem first started showing up for so many other people – after the 4.1.3 update. And the 4.1.4 update that was supposed to fix it “rebroke” at least 2 of our sites after we’d already fixed them the first time around. Most of our sites run on NGINX on Ubuntu. So I’m just keeping an eye on this thread to see if anyone else is experiencing similar issues. Before that 4.1.3 upgrade, we have run this plugin on about 200 client sites for quite some time and never had an issue before, so this caught us kind of by surprise.