I do appreciate you for doing the basic troubleshooting steps, AffordableHotTubRepair.
Our engineers are currently looking into the root cause of the issue you're currently experiencing. I suggest reaching out to us so we can add you to the list of affected users so you'll be notified through email once a permanent fix is available. You can contact us during these hours, please click here.
In the meantime, you can use a browser to enter invoices and estimates. Just log in to qbo.intuit.com. From the left menu, click the +New button. There you can see under the Customers column the Invoice and Estimates options.
Thanks for your patience while we are looking for a resolution to this issue. Leave a reply and I'm here to help you. Take care!
