Thanks for sharing your concern with us, @Fuego.

You can refresh your browser by pressing the F5 key to check if the manage users come back. If not, this can be caused by too many cache files stored in your browser. We can perform some basic troubleshooting steps to check if fixes the issue.

First, let's sign in to your account using a private window by pressing this following key shortcuts:

• Ctrl + Shift + N (Google Chrome).
• Ctrl + Shift + P  (Mozilla Firefox & Internet Explorer).
• Command + Shift + N (Safari).

If it works, go back to your regular browser and clear its cache. These caches of data are essentially junk files and can be safely deleted to free up storage space. Otherwise, switch or use a different browser.

Let me also provide you a link to check the user types who can access features in QuickBooks Online: User types in QuickBooks Online.

If there's anything else I can do for you, please let me know. I'll be around to help.