i am having the same issue, can not do anything right now....

Same issues for me. Cannot accomplish anything. Will be looking into other software options this year. 

I believe things are back up.

Hello, everyone.

Please note that there's an ongoing investigation of the issue you have mentioned. Rest assured; our product engineers are now working on a fix.

While our product engineers are working to fix this as soon as possible, I recommend contacting our Online Team support to be listed as one of the affected users. Once added, you'll be notified via email when there's an update on this issue. Here's how:
 

1. In your QuickBooks, click Help (?).
2. Select either of these tabs:

• Assistant tab and select Talk to a human.
• Search tab and click on Contact Us to connect with a support expert.

If the problem has already been resolved, you can refer to the following link for guidance on recording a payment from an invoice once it is paid: Record invoice payments in QuickBooks Online.

Lastly, you can let us know how it goes. Feel free to reach out to us at any time if you require additional assistance with managing invoices or any other QBO-related tasks. Our support team is available 24/7 to help you. Stay safe. 

I just checked on my end and it appears to be fixed for me as well.

I use the QuickBooks Online desktop app and this morning found that the drop down menus were not working. I tried usiing a browser, private browser, clearing cache, resetting app data and none of that worked. I then read somewhere that it could be malwarebytes extension, so i removed the extension from both Chrome and Firefox even though I was using the app and it worked for me. I hope this helps someone.

Having this issue again today.

Seems to be fixed for people on a lot of menus, but when I try to assign a user role the dropdown still does not work.  I just spent an hour with tech support.

I can see the urgency of getting this resolved, and I want to ensure this is taken care of, ray96, ma2364.

I have reviewed the investigation mentioned in this thread, and it has already been resolved. If you are still facing this issue, ray96, I suggest contacting our Support team. They can conduct a thorough investigation and give you the steps needed to resolve this.

These are the steps:

1. Sign in to your QuickBooks Online company.
2. Select Help (?).
3. Choose either tab to get started:

• Assistant: Get quick, personalized answers. Select a suggested option, or type a question or topic you need help with. If you decide you need further help, you can still Talk to a human.
• Search: Search the QuickBooks Online knowledge base directly, or select Contact Us and choose a way to connect with us:
  • Start a chat with a support expert.
  • Get a callback from the next available expert.

Also, with regards to the user role dropdown, ma2364. We've received similar cases or reports about the issue, and I'd recommend contacting our Support team. I know that you've already contacted them, but they can further investigate the cause and come up with a permanent fix.

I'll be adding these resources that will guide you in personalizing your sales forms and knowing the different options for user roles and access permissions:

• Customize invoices, estimates, and sales receipts in QuickBooks Online
• User roles and access rights in QuickBooks Online

If you have any other concerns about display preferences in QuickBooks, please feel free to reach out. I'm here to help, so just leave a comment below and I'll be sure to get back to you.

Seems to be working now.

As mentioned in my post, I did that.  She said it was a known issue.