Good day, teresita-vasquez.
Let's isolate this issue by accessing your account through an incognito window to see if the tool icons show. This allows the browser to function more efficiently.
You can refer to these shortcut keys to open a private browser:
If it works, then I recommend clearing the cache of your regular browser.
However, I suggest following the steps in this article if the problem persists: Why doesn't anything happen when I select a button or link?.
Please let me know how it goes. I'll be here to help you further. Have a great day.