2022-04-13 - version 1.6.8
* New: Allow coupon configuration setting applicable for the referral code
* New: Allow the customer to send the referral email to multiple users.
* New: Discount on the nth referral sign-up
* New: Add shortcodes for emails
* New: Referral code regeneration
* New: Compatible with the latest WP (6.2.0) and WC(7.5.1)