The fact that it's working when changing the css file name would indicate to me that some sort of caching is going on.
Can you test the stylesheet using a version system? - here's a good write-up on CSS Tricks
Re-uploaded my website but it's still loading old css files
The fact that it's working when changing the css file name would indicate to me that some sort of caching is going on.
Can you test the stylesheet using a version system? - here's a good write-up on CSS Tricks