Contact Form 7 v 5.1.4 Recaptcha v3

Orange Box “THERE WAS AN ERROR TRYING TO SEND YOUR MESSAGE. PLEASE TRY AGAIN LATER”

I am getting the above message on my contact form 7 when submitted via mobile regardless of the browser and on the desktop using Chrome.

I have reviewed this forum and all related topics on the web. Many things have been tried including: changing themes; reinstalling recaptcha and getting new keys and secret keys, installed EASY WP SMTP plugin (configured it and sent an email, with no error), created generic contact form 7 with same error messages. Nothing changed and nothing worked. This is a major revenue stream for my client thus it is costing us money by it not working. Please help.