When you login and visit a page, the browser retrieves your player data (from a database that is stored on the server) then loads the page. Anything on the server side can only be loaded before the page does, for example the browser retrieves your military stats then places them on the page and loads the page.

Anything that happens after the page has loaded, is done on the client side. Things like the spending calculators and the max links for purchasing weapons and training troops. As you enter in and change values it constantly updates. Unlike the server side where your browser reads the required scripts that are stored on the server, on the client side the browser downloads the required scripts, which are saved in your browsers cache. This means that when you visit the armory for example and buy weapons, the browser reads the required scripts that are saved in your browsers cache and not from the server.

Say you messaged me saying that you found a bug with the max value links on the armory/training page, so I edit the script and fix the bug and notify you, but you look and the bug is still there (but it works for me). In majority cases the bug is indeed fixed, but your browser is still reading from the outdated script saved in your browser. So to fix the bug (for yourself) your browser needs to download the updated script, you can do this by clearing your browser cache, then as the page loads it will notice the required scripts aren't saved in your browser and then download them.

On a computer your browser will successfully update the script if it detects any changes in most cases, though sometimes it does fail to do so. On a computer and in a browser you can press F5 on your keyboard which tells the browser to reload/refresh the page. You can also press CTRL+F5 (well in Chrome & Firefox atleast) which tells the browser to reload/refresh the page but then also forces the browser to re-download all resource files that the page requires. This is a quick and easy way of making sure your browser is using up-to-date scripts, as opposed to clearing your browsers cache.

On Mobiles however, browsers seem to be lazier and don't reload the scripts that the page requires, as often as they should/need. To force the browser to update scripts you have to clear your browsers cache.

This has nothing to do with the game or my coding, it is purely your browser failing to re-download resources that have been modified. It also has nothing to do with your device or browser (specifically), it is just the way it works