Hi there, @Steph89. 

Thanks for voicing out your concerns and for letting us know about your experience. I understand what you're going through right now especially the urgency to get this issue resolved right away. 

At the moment, there's an investigation going on about Estimates. Our engineers are now working tirelessly to get this fixed as soon as possible.

We're encouraging all affected users to contact our support and ask them to add you to the list for INV-42833. You can call our QuickBooks Support Australia. Once added, you'll be notified via email regarding the status and its progress. 

Please let me know if you need help with anything else. I'll be here to help.