I cant find any of my bank details , invoices & receipts , that i had entered into intuit quickbooks

Hello Energesuk, 

Welcome to the Community page, 

when you logged in today did any error messages show up or was it just a blank screen showing?

Can you try clearing your cache and cookies, close the browser down and reopen it and log into QuickBooks and see if the information is showing or still not and let us know?