A member can't see the buttons?

Hello everyone~ I tried looking this up but couldn't find anything relevant.

So, one of my members says that she couldn't see the buttons. But everyone else can.

This is how she sees it: {She highlighted the words btw.}



And this is how it should look like:



Could it be that she needs to download something to see buttons???

Thanks for your time! Any help would be greatly appreciated~

Bold and color are reserved for moderation, like this, so please keep to the default font

Could you please advice him/her to use other browsers like FireFox & Google Chrome?

Also, please advice him/her to clear his cache:
https://help.forumotion.com/frequently-asked-questions-f5/how-to-clear-the-cache-in-firefox-internet-explore-chrome-t22597.htm