My developer fixed this with the following code:
<div role=”status”></div>
This must be placed within the Contact Form 7 file ‘contact-form.php’, within the existing ‘<div class=”screen-reader-response”> div which exists on line 586.
So line 586 should read (including quote marks):
‘<div class=”screen-reader-response”><div role=”status”></div>%1$s %2$s</div>’,
I hope this helps someone