Wordpress Disable & Re-generate Minified CSS Files

Hey guys, I'm trying to customize a CSS file in the theme. The problem is because the website serves the minified version of the CSS file, I can't see the changes on the website. Also, the changes that I make on the original CSS file don't reflect to the minified version of that file. I disabled all of the caching plugins and turn on the development mode on Cloudflare but it still persists. I don't know what I'm missing here or if this related to the centminmod. But since I followed the full page caching guide to create the website I thought I can find the solution here.

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I selected KeyCDN Cache Enabler as the guide said. I disabled the autoptimize and other cache plugins, cleared the cache like 10 times, it still tries to get modules-responsive.min.css even if I delete it. Also, I excluded the theme folder and unchecked all the cache options before clearing the cache.

 

I noticed that the theme file already has min.css files natively, but I don't know how to reflect the changes that I make to the min.css files.

 

I solved the problem by editing the theme files, so it had nothing to do with centminmod. Thanks, for the help <3