The browser pages shown on your computer sometimes get kind of stale. That’s because if you visit certain pages often, your computer stores those pages on your computer so it doesn’t have to waste time going out the Internet and grabbing it again and again.
On all browsers there’s a little round arrow in the menu bar, which allows you to refresh the page. Your computer goes back out to the Internet and grabs the newest version.
Unfortunately, sometimes your menu bar isn’t showing. In this case, on all Windows computers, you can use the F5 key. You know, that row of F keys at the very top of your keyboard? When visiting a web page, press that and your page will refresh.