Ive just updated my mac to the Catalina OS and now can't save invoices or add new customers. Can anyone help with this?

Hi allskillspropert,

Sorry to hear you're unable to save invoices or add new customers.

It sounds like it may be a possible browser issue.

To confirm that this isn't a browser issue I would advise you to clear your cookies and cache data.

There are step by step instructions provided in the following article for each kind of browser - 

https://quickbooks.intuit.com/learn-support/en-au/help-articles/delete-or-disable-cache-and-temporary-internet-files-in-your-web/01/368194

If this is still causing you issues, I would recommend giving our customer support team a call on 1800 046 038 to go through some troubleshooting.

Kristian.