Sequential Order Numbers Pro plugin allows your store to have sequential order number rather than random order numbers that are auto-generated by WooCommerce. This plugin automatically picks your last order number and start a sequential order from thereafter. It can also customize order numbers by using prefixes and suffixes. The configuration of the plugin is extremely easy and it can even work out of the box.
This is the EXACT same plugin as distributed by the developer on WooCommerce. The developers’ links are provided above.