Under the product/ service section when i click add new i am not getting the pop up window to add the new inventory non inventory window

Hi sherry-king-quad, 

Welcome to the Community. QuickBooks Online gives you the flexibility you need to manage your business on the go. It's essential you're able to enjoy the full benefits of using QuickBooks and I'll be happy to make sure you experience that. 

The issue you've described sounds like the browser isn't functioning correctly. The good news is you can clear cache and cookies to help fix these issues. This is a great way to fix most minor issues the browser may be having. Here's an article that shows you how to: Clear cache and cookies. I encourage you to try this out and let me know how you make out. 

Feel free to keep me posted on how you make out by leaving a comment below. I'm here to help you achieve your QuickBooks goals with ease.