Step 1: General Options

• Step 1: General Options
• Step 2: Coupon Settings 
• Step 3: Friend Coupon Settings 
• Step 4: Showing referral code 
• Step 5: Sharing Options
• Step 6: Configuring Emails

The settings screen is located under WooCommerce > Settings > Refer a Friend Tab, or just click “Settings” link on the plugins page, after installing the plugin. 

Disable – If this box is checked, referral links won't work, and coupons won’t be generated.

Cookie Time – Once the user comes to your site via a referral link, a cookie is saved on their browser. As long as the cookie stays, the person who referred them will get the reward. Once the cookie expires, a reward (coupon) won’t be generated and that order won’t be marked as a referral order.

Minimum referral order – Set how much someone needs to purchase in order to generate a coupon for the referral. Leave blank to disable this option.

Single Purchase – If this is checked, a cookie will be removed after a successful order. If this option is unchecked, the next time this customer makes another purchase, if the cookie didn’t expire by itself, they would again generate a reward for the person that referred them.

Enable referral links for guests – If this is checked, guests will be able to generate referral links for themselves using their email. This option will enable guests to have referral links through the use of their email.

Referral codes – This option will give your users the ability to share besides their referral links, their personal coupon codes, which their friend will add as a coupon during checkout to get a discount, while the user will get a new referral and once the order is complete, a coupon as well. So it acts just like referral links, except that it's added through a coupon code. The value of the coupon is defined at the bottom of the "Referred Person Coupon Settings" tab. The coupon code of the "Referral Coupons applied on first purchase" section - it looks like the image below:

WooCommerce Subscription –‎ Refer a Friend is compatible with the WooCommerce Subscription plugin. Check this to enable the auto-applying of coupons to subscription renewal. Works with payment gateways that support recurring total modifications. The way it works is that during renewal, it will automatically apply the coupon code to the renewal order if the user has coupon codes from referrals. If coupon value equals renewal price, they will get a free subscription for that period.  

WooCommerce Subscription Apply All Coupons - when this option is enabled it will apply all available coupons during the subscription renewal, up to the amount of the subscription order. So if a user has more coupons than what the subscription costs, those coupons will be left for the next renewal.