I have some information about how to fixed your drop-down menu. Let's access your account via a private browser. This is to check if it's a browser-related issue or not.
Press CTRL+SHIFT+N for Chrome.
Hold CTRL+SHIFT+P for Firefox.
If your drop-down menu is working, it’s a good idea to clear the cache to start on a clean slate. This process helps the browser to fetch the latest version of the webpage and faster browsing experience.
If you're still getting the same result, please contact our Customer Care Support so we can investigate further. Here's how to reach out:
Go to Help at the top.
Scroll down towards the bottom and tick Contact Us.
Enter a brief description of your case, then hit Let's talk.
Choose Get a call.
Additionally, here's a guide that covers all tasks you can do when using QuickBooks Online: QBO help articles.
Keep me posted if you still need about payroll. I’m more than happy to assist further. Have a great day ahead.