Captcha not working in IE or Chrome

Captcha not working in IE or Chrome

The captcha on the form from Zoho campaigns is not working on IE 11 or Chrome. The captcha is not displaying therefore am unable to submit the form. I used the embedded code option from Zoho Web Form and inserted it on my page in WP.

I understand that users have had this issue recently which Zoho seems to have resolved according to the forums but it appears to be broken again.

Please advise.