You can set the thermal printer as the default for invoices in Moon Invoice easily by following the steps below.

1. Open the Moon Invoice application on your device or tap on this link.
2. From the main menu on the left, navigate to the Dashboard and click the Settings icon.
3. Next, select PDF & Print Settings.
4. In the top-right corner, use the dropdown menu to choose Thermal Print.
5. Finally, click Save to apply the changes.

Note: If you prefer to use Normal Print by default for your invoices, follow the same steps and simply select Normal Print instead.