Hi there, 

QuickBooks is a great program for managing your products and services. Our Class feature makes it easy to stay organized with your products and services. I'll be happy to share more info on that. 

First, I'd like to start by doing some troubleshooting to determine if this isn't a browser related issue. When was the last time you cleared cache and cookies on your browser? Doing this will help fix most issues the site may be having. Here's an article which shows you how to do that: How to clear Cache and Cookies. 

Give this a try and if you're still having issues, I recommend contacting our support team using this link.