The QuickBooks Self-Employed file now will only generate GST reports per financial year. You can download the Tax Summary at any time where it will have a break down per quarter of the GST on sales or purchases.
Moving forward you will need to generate the GST reports outside of QuickBooks to get the month-by-month breakdown.
If you wish to provide feedback for this feature to return please see the steps below to raise this with our product team:
1.) Select the Assistant tab in the top right
2.) Then type 'Feedback' to begin the process.