We can see the importance of this matter, and we'd like to thank you for allowing the Community team to assist you in addressing your query. It may have something to do with your current browser. Your browser may accumulate a lot of temporary internet files inside it, causing it to affect your browsing experience when using QuickBooks Online (QBO). Let's rule out the possibility of being in this situation so we can perform some basic troubleshooting. You'll want to access your account in an incognito or private browser. You can use these shortcut keys:
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.
Moreover, here are some articles to help you manage customers payments, add more details to your business reports, and ensure your data stays accurate inside QBO:
Asif, feel free to comment below or visit us here in the Community space if you need further assistance integrating an application or have any additional QuickBooks-related concerns. We've got your back. It'll be our pleasure to help you again. Take care, and have a good one!