How can I add a header icon in Dawn (mobile)

[dadaparis]

Hello everyone! I just followed this tutorial: https://community.shopify.com/c/shopify-design/add-small-image-additional-logo-top-right-on-header-n... and managed to add my icon on desktop but it doesn't show on mobile and I can't find a way to add it or display it somehow.

Thank you in advance for your help!

website: dada.paris