Thanks for that Ray.
I now have an issue with my contact form, which incidentally was working fine before MySQLi updates. Strangely the emails are sending when tested on my localhost which is running PHP 7.2.10. But they're not sending on the live server. I have tried with PHP versions 7.2 and 7.3 which its currently set as but with no joy.
Any Ideas?
Link to test page in PM