Code Customizer support reapply custom codes when you changed to a new theme.
With a new theme, your old custom codes maybe not work with it. Because of that, Code Customizer will automatically disable the app after you published a new theme and notify you with a warning message on every page:
In order to reapply all your old custom code, please follow these steps above.
First step, you need to re-enable app by navigate to Settings tab, and click Enable app button:
After app enabled, the warning message will disappear:
By default, after you published a new theme, all HTML snippets will be disabled automatically. to re-enable them, follow these steps:
In Settings page, click Enable custom html button:
Or you can go to Custom HTML tab, click Enable custom html button:
After enabled, you can see HTML snippet management interface appears and all HTML snippets disabled:
Click to each specific HTML snippet and carefully review again and update it to makes it work as expected for your new theme.
After updated those snippets, you can re-enable them by click on checkbox:
And click Enable snippets button. After that all your snippets will be enabled:
Or you can go to snippet detail page by click on it's name:
In status section, choose Enabled and click Save button at the bottom of the page. After that your snippet will be enabled.