Cannot add payment icon to Publisher theme

Store Design
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1

Hi, I’m running the Publisher theme for my webshop.

I’ve recently added Portone payment method to my store, However the none of payment icons appear in the footer, even I enable “show payment icon” in theme settings. I’ve seen a whole bunch of tutorials which outline the same method.

  1. Go into the Coding

  2. Open the footer.liquid file

  3. Locate

{% for type in shop.enabled_payment_types %}

and replace with

{% assign enabled_payment_types = 'visa,master,american_express,paypal' | remove: ' ' | split: ',' %}
{% for type in enabled_payment_types %}

and adding the required names for the payment icons.

However, that code simply doesn’t exist in the footer.liquid or theme.liquid coding file?

Am I doing something wrong?

Many thanks.