What you need to do is make your browser load the actual new page that the web site is sending, instead of reloading an old stale page out of the local cache stored on your own computer. Exactly how this is done depends on what exact browser and browser version you are using. You may have to reduce the cache size to zero to make it stop caching things incorrectly or you may have to choose a setting that forces the browser to always load the latest page from the web server.
The screen capture below shows exactly how it's done with one version of Microsoft's Internet Explorer. Number 1, click on "Tools" in the browser menu bar and from the available selections click on "Internet Options". That will pop up a new window with a variety of options. Number 2, click on "Settings" under "Temporary Internet Files". This will bring up yet another pop up window. Number 3, click on "Every visit to the page" then click on "OK" to cause the change to take effect.