[Feature Request] Use action scheduler

We would like to request a feature in the plugin where it uses action scheduler for adding order numbers to previous orders.

Problem

– When the option Apply for all orders is checked and the button to save changes is clicked, the plugin tries to add order numbers in the post meta in one-go.

This does not work well for stores with more than 10k orders. Even if it does, it takes a while to do so.

Can you please improve the logic to use action scheduler which can make the changes in the background without putting a burden on the DB as well?