Are there any restrictions with Gift Card Codes?
The primary column in the Gift Card CSV is labeled as the code:
Code (required): Gift Card code, must be made up of alphanumeric characters (numbers and letters without special characters.
*The code has to be a minimum of 8 characters, up to a maximum of 20 characters. *This is a Shopify restriction not an app restriction. If you fall into this category our team can assist with solutions.