Files upload / changes doesn't appear or update

[midana]

The problem:

 

The changes I make in my theme css or any other places for the design (tpl, etc) doesn't show up on the website.

 

I make the changes on the files locally, then I upload and overwrite through FileZilla onto the server, go check the website and nothing happened.

 

I have noticed that the changes sometimes show up later on, when I come back to the website after a longer while. I'm not sure where the problem lies. But I cannot fix the design by waiting that long for each update to actually show up. :/

 

 

 

Some of the things I have tried during the past few days:

 

- F5 and refresh (ofc)

- Clearing browser cache

- Clearing Prestashop cache

- I have the Smarty cache disabled and the template cache on force compilation

- Re-installing FileZilla

- Tried on different computer

- Changing permissions of the files

 

- I also tried using something in .htacess someone wrote in a forum to prevent the server from caching.

- Also tried using a prevention from caching through php above the header (through something I read in forum also)

 

 

Thank you so much for your time. Could really use some help with this. :/

[midana]

Anyone who knows why it takes about 15 minutes for the changes to take place?