Contact Form not working

Where on the site do you have the form having the issue?

Thanks for your reply.
There is a form at the bottom of the home page – https://www.thedesigninventors.com/ that isnt working and also the form on the contact page – https://www.thedesigninventors.com/contacts/

What other plugins and theme do you use on the site?

The theme is Theratio. Plug-ins on the site are all of the following:

Contact form 7, Creative mail, Elementor pro, Envato market, Google analytics, Kirki customiser framework, loginizer, mailchimp, meta box, one click import demo, optinmonster, OT portfolios, plug-in detective, post types order, slider revolution, bluehost, updraft plus, WP rocket, WP forms lite and Yoast SEO

Try switching to the default theme, deactivating all plugins excluding Contact Form 7 and Yoast SEO, and clearing all cache data.

Why you are advised to deactivate plugins and switch to the default theme.

Ok I will try that later and let?you know if it helps.
Will it not mess up?my site design though?