It’s important to understand that modifying the class in CSS and JS is only done for not-logged users and the verification should be done with the browser in private mode.
If the user is logged in, the names of the classes in CSS and JS are not changed to avoid errors in editing and managing the shop. The same goes for page builders.
What can happen, if in Tweaks > Hide Options the Hide Version from Images, CSS, and JS option is activated, then the version parameter from CSS and JS disappears and it could be loaded from the server/browser Cache in private.
Try with the Random Static Number option activated to generate a new URL in the frontend.
https://wpghost.com/kb/hide-wordpress-version/#ghost-activate-hide-version-from-images-css-and-js
If it still doesn’t change in CSS or JS, it means that the server doesn’t show the .htaccess config file and this is seen in a Frontend Test. Or if it’s Nginx, the maybe the server wasn’t restarted after activating that option, and the files are not loaded dynamically so WP Ghost can modify them.
When testing a CSS, test in private mode and possibly put a random parameter at the end such as filename.css?rnd=1112
For any errors that appear, you can send us here videos or screenshots to help us identify the problem and solve it as quickly as possible.
Lastly, reinstall the latest version of the plugin because some patches have been made to change paths in dynamic files.