Let’s perform troubleshooting steps by starting using an incognito or private browser to fix this concern.
You can use these shortcut keys:
Google Chrome: Ctrl + Shift + N
Mozilla Firefox: Ctrl + Shift + P
Internet Explorer: Ctrl + Shift + P
Safari: Command + Shift + N
If it works, go back to your main browser to clear the cache so the system can start fresh. You can also use other browsers as an alternative since it uses a different cache storage folder on your computer.
Let me share this self-help article to get more ideas about managing your QuickBooks account.