Contact form not working after migration to new host

I recently migrated my theme from my own host to a new client’s host (and URL) and the website is working fine.

I have changed all URLs in the database where necessary though the contact form is no longer sending emails.

Troubleshooting so far:

– Created a new contact form to test.
– Updated all URLs through search and replace plugin in new database.
– Added the below code to the end of my theme’s function.php file.

function change_cf_from() {
return “wordpress@YOURWEBSITE.com”;
}
add_filter(‘avf_form_from’, ‘change_cf_from’, 10);

Note that the contact form was working fine on my original website host.

Any help much appreciated.

Thanks,

Will