Problem displaying the site?

Question

CMS

I’ve encountered such a problem for the second time, there is a site on dle, I changed some information (the picture in the header added a couple of links to the menu), everything changed for me, but for another person, everything was the same before the changes for about 10 hours, why can this be? ? Maybe some kind of caching from the provider? on a computer on which the site is not displayed correctly, the cache has already been cleared and other browsers have been installed, it still does not display correctly