I cant louding my customers

Hi there, @trpainting2324. Let's team up and help you get through this to add a new customer inside QuickBooks Online (QBO).

Before we dig deeper into your concern, know we appreciate you reaching out here in the Community space. It may have something to do with your current browser as it accumulated temporary internet files that affect your browsing experience when using the program. In this situation, let's perform some browser troubleshooting to refresh and turn it back to default.

You'll want to access your company using an incognito or private Window. Feel free to use these shortcut keys:

• Chrome: Ctrl+Shift+N
• Firefox: Ctrl+Shift+P
• Safari: Command+Shift+N

Once you're in, try to add a customer. If it works and you're able to get through, you can proceed to clear your browser's cache. Refer to this article for the steps:  Clear cache and cookies to fix issues when using QuickBooks Online.

You can also use other compatible browsers if the issue persists. Refer to this article to see the list of compatible browsers in QuickBooks Online: Other browsers.

Furthermore, here are some articles to help you manage customers, and keep track of all your transactions inside the program:

• Add and manage customers in QuickBooks Online.
• Run reports in QuickBooks Online.

The Community space is open 24/7 if you need help managing customers or have other QuickBooks-related questions. Feel free to comment below so we can get back to you as soon as possible. Have a good one.