Loyalty plus gives you a variable option to integrate with your store and account creation is one of them. Here is how you can do it-
Step 1: Click on “Refer a Friend” on loyalty dashboard.

Step 2:
Please enable the “Refer a friend” activity to create a rule from the Activity Rules bar.

Step 3: Create Rules: Set points to give your customers when they refer a product to a friend. You can also set the discount code when a friend makes the first purchase on the store.

Edit Display Notification and panel text content and Button settings > Then update the settings. Now after enabling this feature, Your customer will receive points when they refer your product to your friend.