Error message on form submission

I’ve had people contact me to say they’re having problems with filling out forms on my site and getting an error message that partly says “Sorry, there was an error. JavaScript and Cookies are required”

This is if they are using Internet Explorer or Chrome. The forms work fine in Firefox. They used to work in all the browsers.

I’m wondering if anyone knows what the cause might be please? I do have a number of plugins but not wp-spamfree as indicated in some much older discussions I’ve seen here on a similar problem with comments.

It is the form on the https://vadirectory.net/team/application/ and also the https://www.vadirectory.net/clients pages.