Custom CSS stopped working

Hi,

I tested the plugin two weeks ago and it seemed to work perfectly. I was able to create a custom CSS sheet for my PDF. While testing I made changes and re-uploaded the CSS multiple times, and the changes were effective immediately each time.

However for a few days when I edit the CSS the changes take several hours before being effective, as if there was some kind of cache.
Also, the preview doesn’t look exactly like the exported PDF.

Can you help me resolve those issues?

Thanks

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