Cannot get subdomain to use new PHP version

Operating system:
Linux
OS version:
Ubuntu 18

Hi.
So, I installed php 7.3, I can see it showing up in virtalmin>server config > php versions

I ran the re-check config and see

The following PHP versions are available : 7.2.34 (/usr/bin/php-cgi7.2), 7.3.24 (/usr/bin/php-cgi7.3), 7.3 (mod_php)
The following PHP execution modes are available : mod_php cgi fcgid fpm
The following PHP-FPM versions are available on this system : 7.2.3 (php7.2-fpm) 7.3.24 (php7.3-fpm)

I created a phpinfo() inside a subdomain virtual server and see it is still using PHP Version 7.2.34-8.

Why when I change the version is it not updating?

Can I have a bump?
I am still stuck on this issue.