Step 3: I modify the settings in Shopify

Text tutorial

1. Product weights
   

   We STRONGLY recommend that you enter the weights of each product (including packaging) in the product data sheets.

2. Automatically capture payments
   

   Settings --> Payment methods --> Payment entry method --> Check "Automatically on payment". 

3. Make email entry mandatory
   
   Settings --> Payment --> Customer contact method --> Check "E-mail
   
4. Make full name entry mandatory
   Settings -> Payment --> Customer information --> Check "Require first and last name" in the "Full name" option
5. Make phone number entry mandatory
   Settings -> Payment --> Customer information --> Check "Mandatory" in the "Shipping address phone number" option
6. Disable automatic order processing
   
   Settings -> General --> In the "Order processing" category --> After payment of an order --> check "Do not automatically process order items".

Moving on to the next step -> Step 4