Drop down boxes wont work

I appreciate you for joining the Community, @info1872.

I understand the inconvenience when a feature isn't working the way it is. No worries, I've got some tips on how we can resolve your issue about the drop-down boxes in QuickBooks Online (QBO).

Before that, may I ask which part of QBO is the drop-down box not working? I'd appreciate any further information you can provide so I'll have a better picture of your concern and come up with the best resolution.

In the meantime, let's perform some basic troubleshooting steps. In some cases, unexpected behaviors from the program are caused by stored cache and site data in a browser. 

First, we can log in to a private browser to rule out the possibility of a browser issue.

Here are the keyboard shortcuts we can use: 

• For Google Chrome browser: Ctrl + Shift + N
• For Mozilla Firefox browser: Ctrl + Shift + P
• For Safari browser: Command + Shift + N

If it works, we can go back to our regular browser and clear our browser's cache and cookies. This way, it removes the accumulated cache that causes errors when using QBO. 

If you've encountered issues with your QBO integration, I've come in handy with this article that contains some common errors and how to fix them: Troubleshoot QuickBooks Online issues.

Feel free to return to this thread if you have more QBO-related concerns. We're always here to back you up. Stay safe, and advanced happy holidays!