NoCaptcha not working

Hello,
I have aChronoForm that has been working perfectly for a number of months. It is using the Google NoCaptcha, I'm not a robot functionality but now when you fill in the form it throws the error:

It appears you maybe a robot? Please try the Captcha again

Nothing I know of has changed in either Joomla or ChronoForms.

Why would it suddenly stop working?

The site is:

https://www.hunterpanels.com/sample-literature

Lee

Hi Lee,

It's working OK when I test? I click the box and get a check mark.

Bob

Yep, I managed to solve it, the server PHP had been upgraded and the furl_open setting was set to off. Turning this to ON solved the problem.

Lee