Hi Kevin! I took a look from my end and everything worked. I'm not sure if you already are, but just in case you aren't, try using google chrome to access the web-tool. As a last thing could you please disable any adblockers you might have on the browser, when on the GA web-tool. Sometimes they interfere with use-cases.

If it still won't work could you take a screenshot of the console tab from the devs tool please.