How to update Shopify settings: Form options
For your customers to be added to your loyalty program, Beautiful Loyalty Programs for Shopify requires that a customer provides you with the minimum details of their first name, last name and email address.
Ensure that the correct Shopify form options are applied to gather this information from customers when they make their customer account at checkout.
1. In your Shopify Admin, go to Settings
2. Under Settings, go to Checkout
3. Under Form Options, go to Full name, select Require first and last name
3. Click Save
When your customers sigs up for a customer account, they will be required to enter their first and last name, then will automatically be added to your loyalty program.