Im trying to add a new user that will be in charge of the invoicing and estimates but its not responding

Let me help you sort this out, Vanmetzingerdj-g.

If the page will not respond, we'll have to perform the basic troubleshooting to fix this. Let's start with logging into your account through a private browser. It's the best spot to identify web issues. These are the shortcut keys:

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

If you can add a new user successfully using the private browsing session, go back to your regular browser and clear its cache. It helps avoid and fix web issues.

You can also use a different web browser to narrow down the issue.

I'll include this article to help you manage your users: Add and manage users in QuickBooks Online.

Reach out to us again if you have other concerns. You're always welcome to post at any time. Keep safe!