Hello, @JB70.

Our back end team has an update regarding the INV 43564. Let me share the steps to solve it.

Here's. how:

Before following the process make sure to back up your company file on your QuickBooks Desktop for Mac.

1. Uninstall QuickBooks 2020 then Reinstall QuickBooks 2020 R4 https://tinyurl.com/yx8ado2k.
2. Send an email and grant QuickBooks access to use mail.
3. Go to the System Preferences, then choose Security and Privacy and Select Automation on the left.
4. Under QuickBooks 2020 check Mail.
5. Close Preferences on QuickBooks 2020 then re-update to R5 through Quickbooks.
6. Go to Check for QuickBooks Updates.

I recommend contacting our support to help you with the process. Please check out our support hours and contact us at the time available to you.

Let me know if you have additional questions by posting here in Community. Have a great day.