WordPress / Elementor Updates

Description

When I update WordPress or/and Elementor the theme breaks. I believe the CSS is the issue. I think the website CSS has been built on old Elementor. As Wordpress and Elementor has updated it's made the CSS out of date. I need a talented wordpress/elementor and CSS expert to fix the issues.
I then may need support to implement javascript code into my website. It's from a JobAdder platform. I'd like the jobadder javascript widget embedded into the theme and under a subdomain. What we'll do is fix the WordPress site in the first instance, then clone it to work under a subdomain careers.example.com then insert the javascript into the theme.