Hi szajko66,
Welcome to the Intuit Community! QuickBooks is an easy-to-navigate program that helps you to manage your accounting with ease. I'll be glad to share information so you can get back to your work.
One possible cause for the home page and invoices not showing in your QuickBooks account could be browsing data. These temporary files can accumulate in your browser, system, and network and can cause the information to appear missing in any cloud-based software like QuickBooks Online. Here are some steps to resolve issues caused by browsing data:
Feel free to reach out here if you need more assistance. We're happy to help.