Hi
Thanks for contacting us and sorry for your issue. To reset an EasyStore order number in JoomShaper, you cannot directly change the order number as it is automatically generated by the system; however, you can effectively "reset" an order by deleting the existing order and creating a new one with the desired products and customer details, which will result in a new, unique order number being assigned.
For more help you can follow this documentation below:
https://www.joomshaper.com/documentation/easystore/managing-orders#:~:text=If%20you%20wish%20to%20make,to%20the%20order%20editing%20interface.
-Regards.