All my customers and invoices have disappeared

Great having you join us here in the Community, @ev555-hotmail-co. I’d be glad to help you fix this issue about your customers and invoices disappeared in QuickBooks Online.

For this matter, one possible reason why transactions show up is when you have applied a filter to the page. In the meantime, you’ll want to review and ensure that all filters are cleared.

Please see this sample screenshot for reference:

Otherwise, there are times that an issue like this occurs when we encounter a browser-related issue. We can fix this by running some basic troubleshooting steps.

I suggest performing the steps through a private window. It's the best place to check browser-related issues while working with QuickBooks. To save you time, use either of these keyboard shortcuts:

• Google Chrome: Ctrl + Shift + N
• Safari 11 or newer: ⌘ + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P

 
If it works fine, you can go back to your original browser and clear its cache to start fresh. You can also use another supported and up-to-date browser to narrow down the result.

I’d appreciate any additional details you can provide regarding your concern, like what specific page are you referring to? This way, I can share accurate information with you.

Additionally, I’ll share with you this article to help you manage your transactions in the future.

Get back to me here if you have further questions with QBO. I'd be more than happy to answer it for you. Have a nice day.