This may be a browser-specific issue, @finance147.
To fix this, let's access your QuickBooks Online (QBO) account in a private browser. There are times that the browser is full of frequently-accessed page resources, thus causing a problem when running websites, like QBO.
Here are the shortcut keys you can use:
Google Chrome: click Ctrl+ Shift + N
Mozilla Firefox and Microsoft Edge: press Ctrl+ Shift + P