Recaptcha not showing with Chronforms5 Wordpress

Hi

I've setup a contact form in Chronoforms 5 on Wordpress. The form is working without recaptcha, but when I add recaptcha it doesn't. The 'I am not a robot' recpatcha checkbox does not appear and when the form is submitted the check recaptcha error message is displayed.

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I have the form setup exactly the same as on a different (joomla ) site that works fine. See below screengrab for setup (I got an error when I tried to upload image, so url link).

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I have entered site key in the load recaptcha event and selected 'Yes' for SSL server, private key is entered in the check recaptcha.

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I'd appreciate some help to get this working soon as client is drowning under a heap or form spam and not impressed!

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Thanks

Ken

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If it's a simple form, just rebuild it in v6 because the only person able to help you with your v5 query on the forums is away for 2 weeks.